Browse Topic: Materials identification

Items (175)

Iron and Steel Castings Engineering Guide

B-ASM-05502/28/2024

This engineering guide, an accompanying guide to Aluminum Castings Engineering Guide (ASM International, 2018), explains the interactions of product design (for function and manufacturability), materials engineering (for the best choice of alloy and microstructure), and process engineering practices (to achieve the properties and integrity of a component at the most comprehensive cost).

Material Recognition Technology of Internal Loose Particles in Sealed Electronic Components Based on Random Forest

01-17-02-0009

12/05/2023

Sealed electronic components are the basic components of aerospace equipment, but the issue of internal loose particles greatly increases the risk of aerospace equipment. Traditional material recognition technology has a low recognition rate and is difficult to be applied in practice. To address this issue, this article proposes transforming the problem of acquiring material information into the multi-category recognition problem. First, constructing an experimental platform for material recognition. Features for material identification are selected and extracted from the signals, forming a feature vector, and ultimately establishing material datasets. Then, the problem of material data imbalance is addressed through a newly designed direct artificial sample generation method. Finally, various identification algorithms are compared, and the optimal material identification model is integrated into the system for practical testing. The results show that the proposed material

Gao, Yajie, Wang, Guotao, Jiang, Aiping, Yan, Huizhen

Wearables: Gold Sensor Performs On-Body Chemical Analysis

TBMG-4695611/01/2022

Carbon Fiber Fabric and Epoxy Resin Wet Lay-up Repair Material Part 2 - Qualification Program

AMS2980/2B (Current)09/24/2021

AMS2980/2 gives specific information about the qualification program for carbon fiber fabric, epoxy systems and the material combination used for wet lay-up repair of carbon fiber reinforced epoxy structures.

AMS CACRC Commercial Aircraft Composite Repair Committee

Chemical Identification of Transportation Batteries for Recycling

J2984_202109 (Current)

09/10/2021

Battery Standards Recycling Committee

Disposition of Landing Gear Components Involved in Accidents/Incidents

ARP4915B-TEST-REC (Historical)08/05/2021

This document establishes a procedure for disposition of landing gear components that have been involved in accidents/incidents. The recommendations in this document apply to components made of ferrous and non-ferrous alloys. The recommendations in this document do not apply to components made of non metallic composite materials.

A-5B Gears, Struts and Couplings Committee

Disposition of Landing Gear Components Involved in Accidents/Incidents

ARP4915B (Current)08/05/2021

A-5B Gears, Struts and Couplings Committee

System Identifies Battery Materials for Recycling

TBMG-3957608/01/2021

The emergence and dominance of Lithium-ion (Li-ion) batteries in markets such as consumer electronics, electric vehicles, and renewable energy storage are driving enormous interest in the battery sector. The growing demand is generating a huge number of spent Li-ion batteries, thereby urging the development of cost-effective and environmentally sustainable recycling technologies to manage end-of-life batteries.

Unidirectional Carbon Fiber Tape Epoxy Repair Prepreg, Vacuum Curing Part 2 - Qualification Program for Fiber, Carbon Fiber Tape Prepreg, and Film Adhesive

AMS6885/2 (Current)02/23/2021

AMS6885/2 gives specific information about the qualification program for unidirectional carbon fiber tape epoxy repair prepreg capable of curing under vacuum for repair of carbon fiber reinforced epoxy structures. The prepreg system shall include an epoxy film adhesive to be applied in a co-bonding process with the prepreg for solid laminate and sandwich bonding.

AMS CACRC Commercial Aircraft Composite Repair Committee

Chemical Identification by Magneto-Elastic Sensing (ChIMES)

TBMG-3848302/01/2021

A low-cost sensor technology, called Chemical Identification by Magneto-Elastic Sensing (ChIMES), uses target response materials (TRMs) as actuators in magneto-elastic (M-E) sensors (Figure 1).

Peel Adhesion Test for Glass to Elastomeric Material for Automotive Glass Encapsulation

J1907_202101 (Current)

01/07/2021

This recommended practice defines a procedure for the construction and testing of a 180 deg peel specimen for the purpose of determining the bondability of glass to elastomeric material in automotive modular glass. This test method suggests that elastomeric material of less than 172 mpa modulus be used as the encapsulating material. The present practice of encapsulating automotive glass is described as molded-in-place elastomeric material onto the outer edge of the glass using thermoplastic or thermosetting material that quickly sets in the mold. The glass is removed from the mold with the cured elastomeric material bonded to the perimeter of the glass. This encapsulated glass module can now be bonded with a sealant adhesive into the body opening of a vehicle.

Materials, Processes and Parts Council

Carbon Fiber and Fiberglass Epoxy Prepreg Products with 350 °F (177 °C) Cure for Aerospace Applications

AMS6891-TEST-REC (Historical)12/30/2020

The intent of this specification is for the procurement of carbon fiber and fiberglass epoxy prepreg products with 350 °F (177 °C) cure for aerospace applications; therefore, no qualification or equivalency threshold values are provided. Users that intend to conduct a new material qualification or equivalency program must refer to the production quality assurance section (4.3) of this base specification, AMS6891.

AMS P17 Polymer Matrix Composites Committee

Carbon Fiber and Fiberglass Epoxy Prepreg Products with 350 °F (177 °C) Cure for Aerospace Applications

AMS6891 (Current)

12/30/2020

AMS P17 Polymer Matrix Composites Committee

E-Tongue Nanosensor Array

TBMG-3799511/01/2020

E-Tongue, a patent-pending technology, is comprised of a silicon-based interdigitated electrode (IDE) array with nanostructured materials that can detect biomolecules and chemical compounds in a liquid sample.

Anodic Coating on Aluminum Alloys Sulfuric Acid Process, Resin-Sealed

AMS2514B (Current)

10/19/2020

This specification covers the engineering requirements for producing an anodic coating on aluminum and aluminum alloys which are subsequently sealed with an organic resin.

AMS B Finishes Processes and Fluids Committee

Performance Requirements for R-134a and R-1234yf Refrigerant Diagnostic Identifiers (RDI) for Use with Mobile Air Conditioning Systems

J2912_202009 (Current)

09/23/2020

Interior Climate Control Service Committee

Fluid, Jet Reference

AMS2629F (Current)03/12/2020

This specification covers a mixture of liquid hydrocarbons and soluble additives.

AMS G9 Aerospace Sealing Committee

Lubricating Characteristics and Typical Properties of Lubricants Used in Aviation Propulsion and Drive Systems

AIR5433C (Current)11/19/2019

This SAE Aerospace Information Report (AIR) establishes guidance for the specification of formulated lubricant properties which contribute to the lubricating function in bearings, gears, clutches, and seals of aviation propulsion and drive systems.

E-34 Propulsion Lubricants Committee

Portable Electrochemical Sensing System

TBMG-3514109/01/2019

An electrochemical sensing system that significantly improves the ability to rapidly and accurately detect heavy metals in biological and environmental samples was developed. Using a simple blood sample from a finger prick, the system identifies and eliminates exposure to toxic metals such as lead. These dangerous elements continue to pose a significant health concern, especially to children.

Glossary of Carbon Steel Sheet and Strip Terms

J940_201907 (Current)07/29/2019

This glossary is intended to provide engineers, metallurgists, and production personnel with uniform definitions of commonly used carbon sheet and strip terms. The glossary serves to supplement information and photographs reported in SAE J810, J763, J877, J863, and J403. Many of the terms listed apply only to hot-dipped zinc-coated products or to uncoated products. The letter C following the term identifies a term applying to coated materials, while the letters NC identify a term applying to uncoated materials. Where no identification is provided, the term is common to both.

Metals Technical Committee

Smartphone Test Spots Poisoned Water Risk

TBMG-3473107/01/2019

Researchers have developed a biosensor that attaches to a smartphone and uses bacteria to detect unsafe arsenic levels. The device generates easy-to-interpret patterns similar to volume-bars that display the level of contamination.

Micro UV Aerosol Detector

TBMG-3463706/01/2019

The detection of aerosols within fluid samples can be accomplished by optical methods. Such methods are useful in detecting potentially harmful aerosols such as biological aerosols that may be present after a biological agent attack or industrial accident. It is well known that biological molecules fluoresce when excited by ultraviolet (UV) radiation. As a result, biological molecules in an aerosol sample can be optically detected by irradiating the sample with ultraviolet radiation and observing the fluorescence response. Since differing excitation wavelengths may be used to detect different classes of biological molecules, the excitation wavelength can be chosen to detect specific classes of biological molecules such as proteins, flavinoids, and metabolite products.

Electrical Characterization of Crystalline UO2, THO2 and U0.71TH0.29O2

TBMG-3452706/01/2019

Tracking and identifying radiation sources in the age of nuclear proliferation and well- resourced non-state actors is a national priority. Current neutron detection methods favor large detector volumes and long data collection times. Additionally, portable neutron detection methods have persistent problems with low signal-to-noise (small pulse height) and require large applied voltages.

Electrical Characterization of Crystalline UO2, THO2 and U0.71TH0.29O2

19AERP06_0806/01/2019

Evaluating the suitability of advanced alloys for use in uranium-based neutron detectors. Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio Tracking and identifying radiation sources in the age of nuclear proliferation and well-resourced non-state actors is a national priority. Current neutron detection methods favor large detector volumes and long data collection times. Additionally, portable neutron detection methods have persistent problems with low signal-to-noise (small pulse height) and require large applied voltages. Conventional neutron detection usually employs scintillators, gas proportional tubes, or semiconductors with separate conversion layers that convert neutrons to charged reaction products. The challenge in conversion-layer devices is to construct a layer of adequate thickness for neutron capture that is also thin enough to allow the resulting reaction products to interact with the charge-sensitive areas. Standard conversion-layer devices

Researchers Create Smartphone System to Test for Lead in Water

TBMG-3442105/01/2019

Researchers at the University of Houston have created an inexpensive system that can detect lead in tap water at levels commonly accepted as dangerous, using a lens made with an inkjet printer and a smartphone.

Using Common WiFi to Detect Weapons, Bombs, and Chemicals in Bags

TBMG-3414704/01/2019

Ordinary WiFi can easily detect weapons, bombs, and explosive chemicals in bags at museums, stadiums, theme parks, schools, and other public venues using a low-cost suspicious object detection system that is easy to set up, reduces security screening costs, and avoids invading privacy such as when screeners open and inspect bags, backpacks, and luggage.

Biological Threat Detectors

TBMG-3337212/01/2018

FLIR Systems, Inc. Wilsonville, OR 1-800-254-0630

Wide-Area Chemical Sensor

TBMG-3339612/01/2018

The detection and localization of gas releases, such as methane from leaking natural gas pipelines or nitrogen oxides from failing electrical equipment, require high sensitivity to the target gas and insensitivity to non-target gases. Infrared (IR) absorption spectroscopy gives highly specific characterization of the identity and amount of airborne chemicals. Traditionally, spectroscopy techniques for long-range chemical sensing separate the “sensitive to x gas” and “insensitive to x gas” atmospheric measurements by quickly switching back and forth between them to reduce errors caused by any atmospheric changes. Because the samples are not measured at the same time, it is impossible to ensure that all atmospheric conditions (e.g., contaminants or humidity) remain constant between the two measurements.

Real-Time Ion Mobility Sensor System

TBMG-3338112/01/2018

A real-time ion mobility sensor developed to detect contaminants and explosives is reliable, sensitive, robust, and inexpensive. The technology improves sensitivity and reduces false alarms for threat agents, and can identify chemicals with a sensitivity of five parts per billion.

Environmental Degradation of Composite Materials

ARP6287 (Current)10/18/2018

In accordance with § 4.11 of AS36100, materials used in the construction of pallets, nets, and containers shall take into account the effects of environmental conditions, such as temperature, humidity, and UV degradation, expected in service. In accordance with (E)TSO-C90, the applicant shall consider environmental degradation due to aging, ultra-violet (UV) exposure, weathering, etc., for any materials used in the construction of pallets, nets, and containers. The purpose of this Aerospace Recommended Practice (ARP) is to provide guidelines for the basic requirements to be considered regarding environmental degradation effects when qualifying composite materials in the design to fulfill the (E)TSO-C90 Minimum Performance Standard. Material qualification is the verifying of a materials attributes and characterizations, which are typically determined through testing. Material variances related to raw materials and manufacturing processes are not part of this Aerospace Recommended

AGE-2 Air Cargo

Configuration Enables RFID Tags to Work as Sensors

TBMG-3310010/01/2018

Fundamental Aspects of Single Molecule and Zeptomole Electroanalysis

TBMG-3302710/01/2018

The objective of this research program was to provide the fundamental understanding required for using the principles of electroanalytical chemistry to detect target molecules at very low concentration, including single molecules, with high specificity, simplicity, and low power.

A Nanotech Sensor Turns Molecular Fingerprints into Bar Codes

TBMG-3287109/01/2018

Infrared spectroscopy is the benchmark method for detecting and analyzing organic compounds. However, that requires complicated procedures and large, expensive instruments, making device miniaturization challenging and hindering its use for some industrial and medical applications. It is also difficult to use it for data collection in the field, such as measuring pollutant concentrations. Furthermore, since it is fundamentally limited by low sensitivity, it requires large samples.

Device Detects Explosives, Drugs, or Lead

TBMG-3283409/01/2018

Warfighters and law enforcement personnel encounter many situations where they need to assess and determine if a situation is hostile or benign. Currently available field explosive detection kits are awkward, prone to mistakes, and difficult to use in non-ideal conditions. Accurate detection is easily thwarted by wind, improper staging areas, distractions, and contaminated hands. Current test devices require sampling gloves, are difficult to carry (multiple cans or bottles and sampling swabs), can easily be used incorrectly (adding reagents in the wrong order or the wrong quantity), and often require access to a flat surface for use.

Identification of Material for AN, MS, and AS Engine and Propeller Standard Utility Parts and Also for Company Parts

AS269J (Current)08/09/2018

This SAE Aerospace Standard (AS) provides material identification codes for aluminum alloys, copper alloys, carbon steels, alloy steels, titanium alloys, corrosion resistant materials, and heat resistant materials that are used to make AN, MS, and AS engine and propeller standard utility parts. This document also provides similar material codes for company parts (such as nuts, bolts, etc.) having design configuration similar to other company parts or the engine and propeller standard utility parts (AN, MS, and AS) that are not of the same material.

E-25 General Standards for Aerospace and Propulsion Systems

Tape and Webbing, Textile, Para-Aramid Intermediate Modulus

AMS3793D (Current)07/10/2018

This specification and its supplementary detail specifications cover para aramid in the form of tape and webbing.

AMS P Polymeric Materials Committee

Real-Time Airborne Particle Analyzer

TBMG-2968607/01/2018

Particle analysis is useful for determining chemical compositions in a wide range of disciplines, from ascertaining the source of a petroleum sample to duplicating a fragrance. The technique is appealing to a broad cross-section of analytical sciences, but its applications are limited because, for existing equipment, sample size is limited, and testing is carried out under a high vacuum.

Passive In-Situ Gas and Chemical Sensor

TBMG-2972807/01/2018

In many chemical processes, it is often desirable to detect the presence, quantity, and/or qualities of certain chemicals of interest; for example, in many closed chemical processes (either batch or continuous), the generation or infiltration of certain deleterious chemicals can damage or ruin the effectiveness of the process. By continually or periodically monitoring such processes, the presence and/or amount of a deleterious chemical may be timely reported, and damage to the system may be averted.

Wireless Chemical Sensor and Sensing Method for Use Therewith

TBMG-2970007/01/2018

NASA Langley Research Center has developed a wireless, open-circuit SansEC (Sans Electrical Connections) sensor that can detect the presence of chemicals without being in contact with the chemical it is detecting. This unique thin-film sensor is used in conjunction with a chemical reactant that detects the presence of the chemical. Because of the way the sensor operates, the reactant can be separated from the sensor itself and placed in caustic or harsh environments, and can still work to detect the specific chemical it was designed to discern. The ingenuity of the thin-film design with the elimination of all wires, connections, and electronic components enables the sensors to be produced cost-effectively. This is an application of the NASA award-winning SansEC sensor, which is damage-resilient and environmentally friendly to manufacture and use. The sensors use a NASA award-winning magnetic field response recorder to provide power to the sensors and to acquire physical property

Nuclear Radiation-Detecting Device

TBMG-2970307/01/2018

A material was developed for nuclear radiation detection that could provide a significantly less expensive alternative to the detectors now in commercial use. Specifically, the high-performance material is used in a device that can detect gamma rays — weak signals given off by nuclear materials — and easily identify individual radioactive isotopes. The device could be used in applications in homeland security such as detecting dirty bombs and the proliferation of nuclear materials.

Chemical Identification by Magneto-Elastic Sensing (ChIMES)

TBMG-2853403/01/2018

A low-cost sensor technology, called Chemical Identification by Magneto-Elastic Sensing (ChIMES), uses target response materials (TRMs) as actuators in magneto-elastic (M-E) sensors (Figure 1).

AMS Index - January 2018

AMSJAN-201802/02/2018

This Index is the most current listing of Aerospace Material Specifications, enabling you to locate each document quickly and easily. Documents are indexed by subject and number, with the subject index organized into seven special interest areas including: Aircraft Maintenance Chemicals and Materials Tolerances Quality Control Processes Non-Metallic Materials and Processes Metals Parts In addition, a "Similar Specifications Index" is included, allowing you to easily find the AMS specifications that are similar to ASTM, AWS, Defense, Federal, or Military specifications. UNS and Alloy information are included as well. Also Available: Aerospace Standards Index

Tool and Die Steels

J438_201801 (Current)

01/09/2018

This standard covers the identification, classification, and chemical composition of tool and die steels for use by engineers, metallurgists, tool designers, tool room supervisors, heat treaters, and tool makers.

Metals Technical Committee