Browse Topic: Quality assurance

Items (1,083)
This standard includes ISO 9001:20152 quality management system requirements and specifies additional aviation, space, and defense industry requirements, definitions, and notes. It is emphasized that the requirements specified in this standard are complementary (not alternative) to customer and applicable statutory and regulatory requirements. If there is a conflict between the requirements of this standard and customer or applicable statutory or regulatory requirements, the latter shall take precedence. This International Standard specifies requirements for a quality management system when an organization: a needs to demonstrate its ability to consistently provide products and services that meet customer and applicable statutory and regulatory requirements, and b aims to enhance customer satisfaction through the effective application of the system, including processes for improvement of the system and the assurance of conformity to customer and applicable statutory and regulatory requirements. All the requirements of this International Standard are generic and are intended to be applicable to any organization, regardless of its type or size, or the products and services it provides. NOTE 1: In this International Standard, the terms “product” or “service” only apply to products and services intended for, or required by, a customer. NOTE 2: Statutory and regulatory requirements can be expressed as legal requirements.
G-14 Americas Aerospace Quality Standards Committee (AAQSC)
The test method describes the procedure for determination of the total acid number of new and degraded polyol ester and diester based gas turbine lubricants by potentiometric titration technique. The method was validated to cover an acidity range 0.05 to 6.0 mg KOH g-1. The method may also be suitable for the determination of acidities outside of this range and for other classes of lubricant.
E-34 Propulsion Lubricants Committee
This specification covers an aluminum alloy in the form of sheet and plate.
AMS D Nonferrous Alloys Committee
This specification covers a low-alloy steel in the form of bars, forgings, mechanical tubing, and forging or tubing stock.
AMS E Carbon and Low Alloy Steels Committee
This specification covers an aircraft-quality, low-alloy, heat-resistant steel in the form of bars, forgings, mechanical tubing, and forging stock.
AMS E Carbon and Low Alloy Steels Committee
This document establishes the general requirements for the quality management of aircraft ground deicing/anti-icing systems and processes. It covers the areas of: Quality system, documentation, and control of records; Management responsibility; Resource management; Product realization; and Measurement, analysis, and improvement. This document defines these areas and their key aspects so they can be practically managed, and that deicing operations can become safer with time. In alignment with AS6285 and AS6286, the primary focus of this standard is on the deicing/anti-icing of aircraft using deicing and anti-icing fluids.
G-12T Training and Quality Programs Committee
This practice provides a method for evaluating microhardness and microstructure very close (0.002 inch (0.051 mm) or less) to the surface of a disk specimen. Specific accept/reject criteria for partial decarburization (3.7.1), inadvertent carburization/nitriding (3.7.3), total decarburization/intergranular oxidation (3.8), and other characteristics evaluated are to be found in the applicable specification where this ARP is referenced.
AMS E Carbon and Low Alloy Steels Committee
The purpose of this SAE Aerospace Standard is to provide guidelines for the components and configurations that define the research and commercial versions of the Weather Support to Deicing Decision Making (WSDDM) winter weather nowcasting system.
G-12M Methods Committee
In the early days of quality management, prior to 1980s, the focus seemed to be on "Quality Control" or "Quality Assurance". Emphasis was placed on inspection and testing. Quality was about conformance to specification. Non-Conformance Reports were representative of quality control. Our understanding of quality management has evolved, largely based on the Toyota Quality and Concurrent Engineering Approach of moving it off the production line for Integrated Product and Process Development (IPPD) [1]. In the late 1980s industry experienced similar difficulties in understanding and adopting quality management. The ideas behind managing quality are quite abstract. Quality is primarily about understanding and satisfying a customer's expectations. This includes implicit expectations, as well as explicit expectations. The techniques of specification, inspection and testing only make sense in that wider context. Formal risk management was developed in the late 1980s and throughout the 1990s. Risk management principles are now widely understood and applied. Functional Safety Management (FSM) simply applies quality management to systems that are designed to control risk. [2] The standards for FSM and Development Assurance (DA) are relatively new. SAE ARP 4754 and ARP 4761 for complex aircraft systems were introduced in 1996 and DO-178 for software in 1998. In 2010 ARP 4754A [3] was created for movement from federated avionics systems to distributed integrated avionics systems which set the stage for Integrated Modular Avionics (IMA) in DO 297 [4]. The Army identified IMA as a critical technology in its Joint Common Architecture (JCA) Final Report [5] and is seeking to provide a Modular Open Systems Architecture (MOSA) approach to its Future Vertical Lift (FVL) programs. [6] The aim is to build and upgrade FVL mission systems without expensive proprietary interfaces. New capabilities from a choice of developers will adapt to emerging threats. The mission system architecture demonstration (MSAD) Program has awarded six contracts to avionics vendors to develop MOSA tools and rules. A capstone demonstration wraps-up this December 2020 and will generate a final report and provide guidance for Future Attack and Reconnaissance Aircraft (FARA), FLRAA and FUAS architectures. MOSA flexibility and economy come to legacy helicopters with the Aviation Mission Common Server (AMCS), which transitions the legacy fleet from single-purpose/single-vendor architectures to more adaptable modules and components. Nonproprietary, government-controlled, open system standards interface new software applications without going to each platform maker for integration. [6] This paper will review FSM, DA, and Open IMA in these civil aircraft standards, compare them with Army Aviation's current Army Military Airworthiness Certification Criteria (AMACC) [7] and recommend a Civil Military FSM DA Framework for FVL and on how AMACC could be modified for FVL Open Systems Architectures (OSA) Certification using a Modular Open Systems Approach (MOSA). [8]
Daniel, Dr.Lewis, Dr.
This specification establishes requirements for a standard contaminant that can be used to represent typical soils encountered in aerospace cleaning. This standard contaminant consists of materials that are common contaminants found in aircraft maintenance depots and manufacturing facilities.
AMS G9 Aerospace Sealing Committee
Continuous Integration as Mandatory Puzzle Piece for the Success of Autonomous Vehicles2020-01-00874/14/2020
The transition to autonomous driving technology is widely discussed topic today. In order to make autonomous vehicles work safely in the long run it will be a necessity to keep their software up to date at any time. The challenge is that software released with today’s traditional release methods for vehicle updates is not deployed fast enough. Newly discovered corner cases or glitches in the design could restrict the usage of entire fleets for long time. This paper discusses the use of continuous integration methods implemented into the automotive system development in order to keep up with the pace needed to make the new technology a success, and accepted by the users. The development process has to contain smart branching strategies for fast turn around. It is mandatory to have a frozen and stable branch to release hotfixes in case of need, a validation branch with feature lock in order to stabilize, and a feature branch heavy development space that is supported by full system regression testing from the very beginning. The change content for validation per test execution has to be limited to minimum in order to support fast issue identification and root cause analysis. A sophisticated end to end continuous integration and validation process applied on the highest system integration level can achieve turn around times measured in hours and not in weeks.
Rohde, Florian
Testing Machines for Measuring the Uniformity of Passenger Car and Light Truck TiresJ332_202003 (Current)3/11/2020
The comfort and fatigue of vehicle passengers is a major engineering consideration. Among the many factors involved are vibratory and auditory disturbances. Tires participate, among other elements of the vehicle, in exciting vibrations and noises. Furthermore, tires also may generate forces leading to lateral drift of the vehicle. This SAE Recommended Practice describes the design requirements for equipment to evaluate some of the characteristic excitations of passenger car and light truck tires which may cause disturbance in vehicles. The kinds of excitations treated result from nonuniformities in the structure of the tire and have their effect when a vehicle bearing the tire travels on a smooth road. This document also describes some broad aspects of the use of the equipment and lists precautionary measures that have arisen out of current experience. The intention underlying these recommendations is to establish a standardized measurement for use by the engineering community. The evidence from years of experience supports the statistical relevance of data obtained using the type of equipment and procedures described. However, mechanical instability of materials in response to temperature, storage conditions, and surface contamination, as well as the previous history of usage, etc., produces variation in vibratory excitations. Thus, the measurements of individual tires are always to a degree of uncertain. Nevertheless, larger values of vibratory excitations are usually well identified, and statistical evaluations of the data usually serve to indicate properly the vibration excitation quality of production lots of tires for those items considered in this document. Criteria of quality which might be based on measurements made under this document follow from the needs of individual engineering applications and are consequently not sufficiently general to be specified here.
Highway Tire Committee
Water Avoidance Design Strategy for Capacitive Exterior Handles2019-36-01871/13/2020
Nowadays, capacitive handles are increasing their use in high-end commercial vehicles. This particular handle applies a technology that permits to unlock and even lock the vehicle without a key. As benefit for current life, the customer has the possibility to access and close the vehicles more efficiently and faster, just possessing the key in the pocket or any close compartment that the user is carrying, for example, bag, purse, backpack. Even though, the design of capacitive exterior handle must follow several design strategies to avoid nonfunctional in rainy climate. Water could work as a blocker for the sensor signal captured, special design strategies that must be taken in order to minimize that the liquid could ingress the handle and even be retained on the region that sensor is located. On this two-piece handle not only the parting line location, drain holes and a favorable drainage for liquids inside the handle must be designed, but also a control on the painting capacitance is hugely important for a successful project. Overall, to validate physically the design, test are required for the antenna and handle in component level. Besides, vehicle tests in abusive condition to reproduce heavy rain environment are highly recommended. The result after following design steps carefully is to launch a reliable product even in not favorable weather conditions.
Demori, DouglasMagalhães, JúlioFerreira, AndersonCamargo, FilipeFreitas, BrunoDias, PedroTurbiani, Michel
Gas Metal Arc Welding Process Parameter Optimization to Reduce Porosity Defect in a Longitudinal Seam Welding of Pressure Vessels05-13-01-000512/2/2019
Abstract Pressure vessels are critical equipment used in industries for storing liquids or gases at a pressure significantly different from ambient conditions. Porosity is one of the major weld defects in pressure vessels that leads to failure during inspection and as well as during its service. Gas Metal Arc Welding (GMAW) process is widely used in industries to fabricate pressure vessels using carbon steel “IS 2062 E250BR” material for storing compressed air. The main objective of this article is to reduce the porosity defect in the longitudinal seam (LS) welding of the pressure vessels. Detailed analysis is carried out to identify the parameters which are influencing the porosity defect. Central Composite Design (CCD) and Response Surface Methodology (RSM) approaches are used to find the optimum value of the weld parameters which produce weld without porosity or any major defects in the pressure vessel. An experimental setup has been established and welding experiments have been conducted under a controlled environment. Experiments were conducted without any external disturbances ensuring clean weld surface and filler wire without any moisture, rust, oil, and the presence of any organic materials. For all the weld specimens, visual and radiography examinations were carried out to identify the severity of porosity. A porosity index is proposed in this study for conducting statistical analysis. Statistical analysis shows current, travel speed, gas flow rate, and torch angle have a linear relationship and stickout distance has a nonlinear relationship with porosity. In square term, stickout distance has a significant influence on porosity defect. In two-way interaction studies, current and gas flow rate, current and torch angle, and travel speed and torch angle have a significant influence on porosity. Confirmatory tests were carried out to validate the optimum weld parameters obtained in this study.
Kuppusamy, A.Rameshkumar, K.Sumesh, A.Premkumar, S.
Items per page:
1 – 50 of 1083