Browse Topic: Noise pollution

Items (35)

Challenges for Indian Road Traffic with Sound Alert Devices on Electric Vehicles

2024-26-021101/16/2024

Challenges for Indian Road Traffic with Sound Alert Devices on Electric Vehicles For safety towards pedestrians and other road-vehicles, sound alert systems (horns) have been in use since development of Automobiles. On the same line but with special purpose of preventing a Driver to sleep in a running vehicle, a Driver Monitoring System [DMS] is recently developed. For Electric Vehicles which are very quiet during starting and driving till 20 km/hr, Acoustic Vehicle Alert System (AVAS) is deployed in Europe and likely to be implemented in India soon. For all these Alert Devices, there are Standard Regulations across the world: ECE R-28 for Horns and ECE R-138 for AVAS. They, however, define only lower and upper dBA limits of the sound radiated by them. For DMS, no such regulation exists till today. With this, there has been a long time debate on what an optimal dBA level should be there, for all road-users as well as for vehicle- users inside the cabin. It would be adequate, on one

A, Milind Ambardekar

Achieving New Pass-By Noise Regulatory Norms R51.3 (Method B) - An Analysis of Acceleration and Noise Source Contribution

2024-26-019901/16/2024

Worldwide automotive sector regulatory norms have changed and become more stringent and complex to control environmental noise and air pollution. To continue this trend, the Indian Ministry of Road Transport is going to impose new vehicle exterior pass-by noise regulatory norms R51.3 (Method B) in the upcoming year to control urban area noise pollution. This paper studies the synthesis of M1 category vehicle driving acceleration, dominant noise source, and frequency contribution in exterior PBN level. A vehicle acceleration analysis study was carried out to achieve an optimized PBN level based on the vehicle’s PMR ratio, reference, and measured test acceleration data. Based on the analysis, the test gear strategy and acceleration were changed to achieve a lower PBN level. Improved engine calibration resulted in a 20% increment of ith gear acceleration. This increased acceleration surpassed the upper limit of the reference acceleration range; hence, the vehicle was tested in a

kalsule cEng., Shrikant Balasaheb, Titave, Uttam, Patil, Jitendra, Jadhav, Kamalakar, Naidu, Sudhakara

Sound Design for Electric Vehicles: Enhancing Safety and User Experience Through Acoustic Vehicle Alerting System (AVAS)

2025-01-006805/05/2023

Silent engines are an excellent strategy to combat noise pollution. Still, they can pose risks for pedestrians who rely on auditory cues for safety and reduce driver awareness due to the absence of the familiar sounds of combustion engines. Sound design for silent engines not only tackles the above issues but goes beyond safety standards towards a user-centered approach by considering how users perceive and interpret sounds. This paper examines the evolving field of sound design for electric vehicles (EVs), focusing on Acoustic Vehicle Alerting Systems (AVAS). The study analyzes existing AVAS, classifying them into different groups according to their design characteristics, from technical concerns and approaches to aesthetic properties. Based on the proposed classification, an (adaptive) sound design methodology, and concept for AVAS are proposed based on state-of-the-art technologies and tools (APIs), like Wwise Automotive, and integration through a functional prototype within a

Esteves, Raquel, Campos Magalhães, Eduardo Miguel, Bernardes, Gilberto

Interior Noise Reduction of Construction Equipment Vehicle Through Structure-borne Noise Reduction Strategy

2025-01-006305/05/2023

One can witness the constant development and redevelopment of cities throughout the world. Construction equipment vehicles (CEVs) are commonly used on the construction site. However, the noise pollution from construction sites due to the use of CEV has become a major problem for many cities. The construction equipment employed is one of the main causes of these elevated noise levels. The construction workers possibly are face a potential risk to their auditory health and well-being due to the noise levels they are exposed to. Different countries have imposed exterior and operator noise limits for construction equipment vehicles, enabling them to control noise pollution from CEVs. In this study, the operator ear level noise of the identified vehicle is 6 dB(A) higher than the regulatory limit in dynamic conditions, when tested as per ISO 6396. It was a tough time for the NVH engineer to reduce the interior noise level of the vehicle. Surprisingly, the steering unit and radiator fan were

Jawale, Pradeep

SAE TOMORROW TODAY: Mark Moore's New Start-Up Making Noise with Quieter Electric Aircraft

1316810/22/2021

A new age of flight is taking shape from brilliant engineers who are redefining how lower carbon emissions, minimal noise pollution and reduced maintenance costs can work together. Mark Moore's newest venture, Whisper Aero, is combating busier skyways with a new electric thruster design that reduces noise to a near-imperceptible level. Moore, a former NASA engineer and Uber Elevate executive, discusses the need for sustainable eVTOL, eCTOL and eSTOL aircraft, how eliminating noise will aid public adoption, and why he decided to set up camp in Crossville, Tenn. Stay updated on the latest news from Whisper Aero: https://www.whisper.aero/

Hineman, Marcie

Reduction of Aeroacoustics Tonal Noise for a Tractor Cooling Fan

2021-26-029909/22/2021

Currently, noise pollution has become one of the major environmental concerns. To address this, new noise standards and regulations are being introduced and mandate the tractor OEM's to meet the defined noise levels. Fan noise from the cooling fan is one of the key contributors to the overall vehicle noise. Hence, the reduction of fan noise at the source is a very important and critical task. Even though fan noise is broadband in nature its aerodynamic noise sources are most dominant at the higher harmonics of the blade pass frequency (BPF). Aerodynamic noise of a fan can be varied by changing the fan geometry viz. blade profile, fan width & diameter, no. of blades, and ring on its periphery. Cooling fan is an important component of the cooling system which ensures adequate airflow for radiator cooling and avoids engine overheating with uniform heat dissipation. The important parameters that need to be considered while designing a cooling fan are noise level, airflow, and power

Avinash, D., Shankar, M, Maller, Rathish, V, Ravindran

DESIGN AND ANALYSIS OF A MUFFLER FOR ENGINE EXHAUST NOISE AND HEAT REDUCTION

2021-28-012809/15/2021

Exhaust noise and heat from engines is one of component noise pollution to the environment. Exhaust systems are developed to attenuate noise meeting required db levels and sound quality, emissions based on environment norms. Mufflers are important part of engine system and commonly used in exhaust system to minimize sound transmissions caused by exhaust gases and reduction of heat. Attaching a muffler in the exhaust pipe is the most effective means of reducing noise and heat. The aim of our project is to design and analyse a muffler for engine exhaust noise reduction. The suitable design and development will help to reduce the noise level and heat level, but at the same time the performance of the engine should not be hampered by the backpressure caused by the muffler. In this analysis 3D models are constructed using Solid Works software before exporting to ANSYS FLUENT CFD software for analysis. At ANSYS/FLUENT, pressure conditions will be specified as the inlet and outlet boundary

Deepan Kumar, Sadhasivam, Praveenkumar, Nagarajan, S, Arulkumar, N, Boopalan, PRAVEENKUMAR, S

Equivalent damping added by Sound package

2020-01-139704/14/2020

In Automotive and Aerospace industries, sound package has an important role to help identify and control vehicle noise in order to improve passenger comfort and reduce environmental noise pollution. The well-known used approaches to model the sound package are Transfer Matrix Method (TMM) combined with Statistical Energy Analysis (SEA). The effect of sound package on the sound radiation can be summarized in three points. (i) Interact with the non-resonant response of the panel to modify the mass law. (ii) Act as a barrier and modify the radiation efficiency of the panel. (iii) Acts as a multilayer damping treatment on the panel. To the best of our knowledge, the equivalent damping due to the multilayer has not been done by earlier researchers and it's a novel approach. In this paper, an experimental study will be conducted to assess the add-on damping by sound package for different configurations. The decay rate method will be used to measure the damping indicator on a flat samples

Rhazi, Dilal, Mathur, Kunal, Nulkar, Abhishek

Impact of “Break In” Running on Exhaust Emissions and Fuel Consumption of a Portable Genset

2017-01-101203/28/2017

In developing countries like India, large numbers of portable gensets are used as a power source due to the scarcity of grid power supply. The portable gensets, ranging from 0.5 kW to 5 kW are very popular in the residential areas, for example, small restaurants, and shopping complexes, etc. These gensets are using various fuels like gasoline, diesel, LPG, and kerosene in small internal combustion engines. Such engines are the significant source of air pollution, as these are running in the vicinity of populated areas and higher human exposure to these pollutants.Theses gensets are regulated by exhaust and noise emissions norms, set by statutory bodies like the ministry of environment and forest and central pollution control board of India. The gaseous emissions of carbon monoxide (CO), total hydrocarbon (THC) and nitrogen oxides (NOx) and particulate matter (PM)-diesel only, are regulated, and emission testing is performed as per three mode cycle as specified in the regulation.The

Pathak, Sunil Kumar, sood, Vineet, Singh, Yograj, Channiwala, Salim Abbasbhai

Bistatic DIAL for Multi-Species Aviation Pollutant Measurements from RPAS

2015-01-247709/15/2015

This paper presents the conceptual design of a new low-cost measurement system for the determination of pollutant concentrations associated with aircraft operations. The proposed system employs Light Detection and Ranging (LIDAR) and passive electro-optics equipment installed in two non-collocated components. The source component consists of a tuneable small-size and low-cost/weight LIDAR emitter, which can be installed either on airborne or ground-based autonomous vehicles, or in fixed surface installations. The sensor component includes a target surface calibrated for reflectance and passive electro-optics equipment calibrated for radiance, both installed on an adjustable support. The proposed bistatic system determines the column-averaged molecular and aerosol pollutant concentrations along the LIDAR beam by measuring the cumulative absorption and scattering phenomena along the optical slant range. The molecular column densities are measured by means of Differential Absorption LIDAR

Gardi, Alessandro, Sabatini, Roberto

Measurement of Minimum Noise Emitted by Road Vehicles

J2889/1_201205 (Historical)05/14/2012

This SAE Standard is derived from SAE J2805 and specifies an engineering method for measuring the minimum noise emitted by road vehicles. The specifications reproduce the level of noise which is generated by the principal vehicle noise sources consistent with minimal noise emission in urban traffic. The method is designed to meet the requirements of simplicity as far as they are consistent with reproducibility of results under the operating conditions of the vehicle. The test method requires an acoustic environment which is only obtained in an extensive open space. Such conditions usually exist during: Measurements of vehicles for regulatory certification Measurements at the manufacturing stage Measurements at official testing stations The results obtained by this method give an objective measure of the noise emitted under the specified conditions of test. It is necessary to consider the fact that the subjective appraisal of the annoyance, perceptibility, and/or detectability of

Safety and Human Factors Standards Steering Committee

Intake System Design Approach for Turbocharged MPFI SI Engine

2011-26-000101/19/2011

The automotive industry is currently facing the challenge of significantly stringent requirements regarding CO₂ emission and fuel economy coming from both legislations and customer demand. Advanced engine technologies play a vital role for downsizing of gasoline engine. The development of key design technologies for high efficiency gasoline engines is required for the improvement of competitive power in the global automobile industry. This paper focused on effect of geometry of intake manifold of gas exchange process and consequently the performance of the engine. Specially, the optimal design technologies for the intake manifold and intake port shape must be established for high performance, increasingly stringent fuel economy and emission regulations. Space in vehicle or packaging constraints and cost are also important factors while consideration of the design. Two models of intake manifolds discussed in this paper, such as short runner intake manifold and long runner intake

Jagtap, Harishchandra, Vinayak, Chavan, Koli, Ravindra

Propulsion challenges

10AEMD0428_0104/28/2010

Universities and research institutes in the U.K. are playing an ever-growing role in EU aerospace development projects as well as maintaining an independent industry workload. In aerospace and beyond, there are a lot of human activities now being challenged to become more environmentally friendly. As a result, there is a lot of impetus to change the way we do things to protect the environment. Aerospace is doing its fair share and, in some ways, a lot more than its fair share because many applications developed in aerospace are finding their way into other sectors, one example being reducing pollutants. The roots of some of these developments can be traced back to universities, with those in the U.K. having a particularly strong presence. Within the department of Power and Propulsion School of Engineering at Cranfield University, for example, the efforts made within aerospace can be categorized in three areas.

Challen, John

Acceptability of OHM and ATV Noise-Case Studies of Environmental Noise Produced by OHM and ATV Riding Areas

2009-01-224405/19/2009

Acceptability of Off-Highway Motorcycle (OHM) and All Terrain Vehicle (ATV) noise is increasingly becoming an issue. Increasing numbers of riders combined with a decrease in available riding areas, due to liability concerns and increasing rural development, has raised issues with land compatibility. Lack of clear noise regulations in typical rural Midwestern communities makes enforcement difficult or subjective. This paper reviews two case studies of OHM and ATV riding area noise at neighboring residential property lines. One study was performed as part of the defense for nuisance tickets, for excessive noise, issued to a group of riders at a new private riding area. The other study was performed to help an established riding club obtain a conditional use permit for their land, which they had been legally riding on for decades, due to noise and dust complaints from new residential development next to their property. An issue immediately raised with both of these studies was determining

pierson, Richard G.

Combining acoustic imaging techniques to localize and identify sources

2008-36-059503/30/2008

This paper deals with recent advances in acoustic experimental methods and especially acoustic imaging. The paper covers two areas of interest to acousticians. In the first part, it is explained how near-field acoustic holography (NAH) can be extended with beamforming in the near-field, focalization. The combination of the two methods is providing now a source localization solution with a good spatial resolution over the complete frequency range without the burden of measuring a large number of points as would be required if only NAH was used. In the second part of the paper, a method is described that goes one step beyond source localization. In this part is explained how source localization techniques in conjunction with artificial excitation of the structure can provide information on the internal sources of the structure.

Deblauwe, Filip, Beguet, Bernard, Robin, Maxime

ECoustics -- Vehicle Sound Package Inspired by Environmental Design

2007-01-240505/15/2007

The environmental issues are mounting for a global automotive industry associated with ever-increasing output. Major issues include fuel consumption, vehicle emissions, consumption of non-renewable materials, and recycling of waste materials. This paper provides an overview of recent advances in new acoustic materials based on recycled and sustainable sources for “environmental” vehicle sound packages that address NVH and trim acoustics requirements. Thanks to new eco-design standards, both the OEM and suppliers can increase and improve eco-friendly aspects such as recycling end of life vehicles. The use of end of life materials in a new car includes: automotive shredded residue (ASR) such as tire fibers included in damping materials, chips foam from seats for acoustical shields, and automotive shredded residue for acoustical dash insulators.

Boyer, Aureli, Casulli, Jean, Horak, Jan, Khan, Hameed, Berdine, Michael D.

Model-Based Synthesis of Noise in Aircrafts

2005-01-340410/03/2005

Aircraft noise modeling aims to provide designers with computational tools that allow exploring the design parameters domain early in the design and development process. A number of modeling techniques are available for acoustics and vibration prediction, but in order to define objective targets for sound quality perception, dedicated tools are still needed to correlate structural models and design modifications with human perception of sounds. This paper presents a model-based sound synthesis concept for interior and exterior aircraft noise that allows interactive, real-time sound reproduction and replay. The proposed approach is presented through two application cases: jet flyover noise and turboprop interior noise.

Janssens, Karl, Van de Ponseele, Patrick, Vecchio, Antonio, Van der Auweraer, Herman, Flynn, Bill, Berckmans, Dries

Pass-by Noise Analysis in a Commercial Vehicle Homologation

2003-01-365211/18/2003

NVH (Noise, Vibration and Harshness) is an important vehicle attribute and focus in every Product Development at OEM'S (Original Equipment Manufacturers). Pass-by Noise is one of these aspects in order to improve noise vehicle as a whole. As a result, this paper will show opportunities that Pass-by Noise test can get in a new development of Commercial Vehicles, presenting the methodology, NVH improvements, Quiet Truck and Frequency Analysis as well as Robustness of Noise Package Development. Moreover, the presentation will consider all the requirements and the advantages that Pass-by Noise can accomplish in a new Sound Package Development to meet a new Conama Resolution. The focus on this topic is to meet a new Governmental Regulation (CONAMA 272/2000) and consequently improve overall noise quality showing procedures that will accomplish targets of NVH. Conclusions will present the advantages of the proposed method regarding to timing and cost and real cases examples will be mentioned.

Martins, Rogério, Pinto, Márcio Gonçalves, Mendonça, Carlos Magno, Morais, André Ribeiro

Application of Machinery Diagnostic Techniques for Identifying and Elimination of Annoying Whistling Noise of Two-Wheeler Gear Box

2003-26-003201/18/2003

This paper discusses the methodology and techniques, which are used to investigate and reduce noise generation by gearbox. The aim of this paper is to investigate the root causes and to eliminate a uniquely identified gear noise. Steps presented illustrate a logical process, which begins with identification of gear whistle frequency of a two-wheeler gearbox through narrow band analysis and subsequent elimination by design improvement. The specific examples discussed here involve the successful elimination of an intolerable high dB (A) whistle noise produced by gearbox.

Reddy, P. V., Shirode, Satish V.

Improved Mufflers for General Aviation

TBMG-2989201/01/1999

Innovative designs of mufflers for engines of small airplanes have been investigated in an effort to satisfy conflicting demands to maximize the reduction of exhaust noise while minimizing back pressure, size, and weight. Automotive-type muffler designs are not suitable for this purpose because they entail excessive back pressures, sizes, and weights.

Noise Attenuation for Polyamide Intake Manifold

95023202/01/1995

Noise Attenuation for Polyamide Intake Manifolds Since the stiffness of polyamide is lower than aluminum, special techniques have been developed to increase local and global stiffnesses of polyamide intake manifolds. The increased stiffness results in parts with noise emissions equal to or less than equivalent aluminum intake manifolds with twice the wall thickness. These special techniques enable engineers not only to attenuate noise, but to “tune” the remaining noise emissions for a desirable sound quality.

Sattler, Eric, Abboud, I.

Urban Transport and the Environment in the Asia-Pacific Region

91259611/01/1991

Across the entire globe, motor vehicle usage has increased tremendously. One result is that many areas of the world have been experiencing serious motor vehicle pollution problems. To deal with them, significant motor vehicle pollution control programs have become increasingly common, leading to tremendous advances in petrol car control technologies. At present, similar technologies are under intensive development for diesel cars and trucks and significant breakthroughs are starting to appear with production diesel vehicles. The purpose of this paper is to survey what is presently known about the transportation related environmental problems in Asian cities, to summarize the adverse impacts which result, to review actions underway or planned to address these problems, and to estimate future trends. Potential strategies for ameliorating transportation related environmental problems will be assessed.

Walsh, Michael P.

Motor Vehicle Air Pollution in Greece—Programs and Policies

87107908/01/1987

The purpose of this paper is to survey the environmental problems in Greece caused by road vehicles, to review the actions taken and planned in the last decade by the competent authorities against pollution and to identify the effectiveness of these actions to prevent and reduce atmospheric pollution caused by road vehicles. The major reference is to Athens where the environmental problems were firstly experienced. Where it is possible reference is made to the country as a whole. Setting environmental standards, application of vehicle inspection programs, development of public transport and infrastructure, traffic management schemes, 5-years environmental plans, urban planning and research are the main sectors of action and concern.

Vasilakos, Evangelos K.

The Program of Greece to Address - Motor Vehicle Air Pollution

85039202/01/1985

A series of measures are developed in Greece, in order to face and solve the complex problems of environmental pollution caused among other sources by motor vehicles. These measures are basically aiming at reducing air pollution in Athens Area where the basic source of a number of pollutants is traffic and where fleet has increased very rapidly in the past twenty years. Setting environmental standards, application of vehicle inspection programs, development of public transport and infrastructure, new traffic management schemes and integrated urban planning are the main sectors of actions and planning which are expected to reduce pollution and prevent the deterioration of the human and material environment. Research on the interaction between transport and the environment is in progress.

Vasilakos, E. K.

Status Report of Italy - 1985

85600501/01/1985

This report outlines Italian safety concerns. Domestic statistics have shown a slight decrease in casualties due to road accidents and a stable situation with regard to injuries. Italy has adopted approximately 55 ECE regulations and 46 Community Directives. Active and passive safety measures are outlined. Emission limits and noise pollution legislation are under consideration.

Rossi, Franco

Status Report of the Federal Republic of Germany - 1985

85600401/01/1985

The report reviews safety priorities in Germany. Accidents have increased by 9.3 percent. In 1984 the Federal Government presented a comprehensive program for improving road safety. An accident research database has been established and studies on active safety, driver training and the rating of safety of driver groups has become increasingly important. Environmental problems, especially noise pollution and exhaust emissions are a major EEC concern.

Praxenthaler, Heinrich

Traffic Noise Measurements in the City of Bandung, Indonesia

83095211/07/1983

Traffic noise measurements have been done at several locations representing urban area, center and periphery of the city. The traffic consists of cars, motor cycles, trucks and buses. The percentage of motor cycles is relatively high (30-50%). The flow of vehicles is not uniform with a 24 hour average of more than 1000 vehicles per hour. The noise levels to be measured were L10, L50 and L90. The noise indices to be calculated were Traffic Noise Index (TNI), Equivalent Energy Level (Leq) and Noise Pollution Level (LNP). Evaluation of the noise indices based on the corresponding limit values show that at most of the streets the values have been exceeded. Predictions of L10 (18 hr) compared with the measured values were also discussed.

Noise Pollution From Road Traffic in Urban Environment

78506901/01/1978

In the 1970's, the noise of road traffic was investigated in Budapest and in five rural towns /Gyðr, Szeged, Debrecen, Szombathely and Dunaujváros/ of Hungary. 650 measurements were made at 348 points of the towns. Relations among the equivalent A-weighted noise level and certain statistical levels were analyzed on grounds of the measurement results. The regional distribution and fluctuations in time of road traffic were evaluated. In parallel to the measurements, also a census of road traffic was taken. Relations among the various characteristics of traffic noise and traffic density were analyzed by mathematical-statistical methods. In addition to the simple first-degree relation also the second-degree relations considered to be more precise were determined. The relations thus obtained could be used for forecasting the noise of road traffic. The measurement results were compared with the data of similar investigations conducted in Budapest /1959/ and in Szeged /1961/. On grounds of

Czabalay, Lázló

The Evolution of Contemporary Concerns in Mobile Hydraulics

74041802/01/1974

The growth of hydraulics applied to construction equipment has been qualitatively and quantitatively dramatic in the past 25 years. The purpose of this paper is to review the past, view the present, and speculate on the future hydraulic systems with particular focus on the evolution of operator comfort and safety, air, and noise pollution control and energy conservation.

Link, John R.

Sound Attenuation After the Fact

72075102/01/1972

The noise levels of earthmoving equipment, in the operator's cab and outside the machine, are discussed. Ways and means of lowering the dB ratings for increased operator and by-stander comfort are taken into account. Suggestions are made for ways of mounting the cab itself and lessening vibratory reactions from the engine, including rubber engine and cab mounts, plus acoustical material for reducing inside the cab noise.

Giovanetto, James, Kacynski, Carl

The Environment and The Bus

72060702/01/1972

The ecology of our environment has recently been of great concern to all of us. In the bus business, we have gone from horse drawn carriages, to electric, to steam power to diesel power to obtain an efficient, clean operating vehicle. A great deal of effort has been expended in determining the components of the emissions of the diesel engine. Great strides have been made in reducing these emissions. GMC Truck & Coach has developed and released an Environmental Improvement Program that reduces smoke to the invisible range and meets Federal standards for HC, CO and NOx. Odor also is eliminated as a problem.

Field, Robert E.

Application of Lead-Vinyl Noise Barriers in Transportation Equipment

72022202/01/1972

Lead vinyl coated fabrics, new composite vinyl films, and molding compounds have been developed that have application as flexible sound barriers in transportation and recreational equipment. The material consisting of fine lead particles disbursed in PVC compounds for coating, casting films, extrusion, injection molding, thermal form sheets, and rotational casting combines the high mass of lead and the properties and formability of vinyl. These composites provide a limp high mass sound barrier material.

Meteer, Charles L.

Effects of Air Pollution on Man and His Environment

71032602/01/1971

Air pollutants emitted from turbine engine aircraft may have adverse effects on man and his environment. Carbon monoxide, nitrogen oxides, various organic compounds, and particulate matter are the primary pollutants produced by jet engines. Carbon monoxide at low levels may cause impairment of both time interval discriminations and of visual acuity. Nitrogen dioxide has been associated with reduced ventilatory performance and an increase in acute respiratory illness. Some organic compounds, such as formaldehyde and acrolein, may cause eye irritation, and excess of particulate matter in the atmosphere has been associated with increased chronic respiratory disease. In addition to effects on human health, pollutants emitted from turbine engines may adversely affect plants, animals, soil, water, and man-made materials. Much more research is needed before effects on health and welfare can be specifically related to aircraft emissions.

Barth, Delbert S.

The Challenge Facing the Automotive Industry in the Next Decade

71087702/01/1971

Brock, Harold L.

The Engineer and Man's Environment - Academe's Response to the Challenge

71000602/01/1971

The increasing levels of affluence in the highly industrialized western societies have resulted in a drastic and increasing deterioration of the quality of man's environment. The economic facts in these societies are such that it actually “pays to pollute.” Air and water pollution, solid waste disposal, and noise pollution have become areas of major concern for the institutions of higher learning. Through instruction and research, knowledge toward the alleviation and control of environmental pollution must be disseminated and advanced. One of the major contributors to the present state of environmental deterioration is the almost absolute lack of well-defined control criteria. Much needs to be done in this area and the academic community has the know-how and economic remoteness to tackle this problem. One of the most fascinating facets of the environmental pollution problem is its interdisciplinary nature. In this paper, the Pennsylvania State University's programs on air pollution

Reethof, Gerhard

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