Browse Topic: Gases

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Detailed Approach for Pre-Chamber Heat Release Analysis for the HSASI Pre-Chamber Spark Plug Using a Pressure Sensor Glow Plug2024-32-006304/18/2025
The hot surface-assisted spark ignition (HSASI) pre-chamber spark plug, which was developed at the Karlsruhe University of Applied Sciences, increases the dilution limit with excess air and the tolerance to residual gas in the pre-chamber compared to a conventional passive pre-chamber spark plug. In this study, the conventional glow plug which is integrated in the pre-chamber of the HSASI pre-chamber spark plug was replaced by a pressure sensor glow plug (PSG) from BERU. This allows for a detailed combustion analysis in the pre-chamber. The signal of the PSG was validated with a piezoelectric cylinder pressure sensor and a method to analyse the pre-chamber heat release was introduced. Experimental investigations were carried out on a single-cylinder gasoline engine. A series of operating points diluted with excess air and a variation in load were conducted. The gas flow rate through the orifices of the pre-chamber was calculated from the pressure difference between the pre-chamber and
Holzberger, Sascha, Kettner, Maurice, Kirchberger, Roland
Technical Paper
Experimental analysis on development of algae based catalytic convertor for ecofriendly environment2022-28-048111/18/2022
Due to increased use of automobiles in some of the major cities had resulted in serious concerns about urban air quality caused by engine exhaust gas emissions and also more harmful species derived from them via photochemical reactions. The three main exhaust gas pollutants derived from exhaust emissions are hydrocarbons, carbon monoxide and nitrogen oxides. Engine modifications are not alone sufficient to control them therefore the catalytic systems are introduced to do this. But the biggest limitation of regular catalytic convertor is the use of precious metals like platinum, titanium, palladium etc. in this article an algae based catalytic convertor is fabricated and experimentally tested. The conducted analysis and experiments shows that algae based catalytic convertor is indeed a best substitute to the regular catalytic convertor. The CO2 emission was reduced from 0.9 vol % to 0.2 vol % and the CO emission was reduced from 14.22 vol % to 0.68 vol%.
Lucas, Annagowsalya
Technical Paper
Ultimate Breakage Load Calculation Method of Cold Gas Inflator Burst Disk2022-01-093803/29/2022
For cold gas Inflator, high refinement of ultimate load forecast is one key of Inflator development. At beginning, two methods based on implicit algorithm, Zero Curvature method and RIKS method were used for burst disk hydro-burst test ultimate pressure load calculation. After considering the effect of bursting disk stamping process, comparing with results of real test, the refinement of the two methods were above 97% both. Studying the corresponding relations between displacement and stress matrix of the center point of burst disk by RISK method. It was found that under ultimate load, the third principal stress vs. displacement curve of the central node shown extreme point, and load step of the point was corresponding the one of maximum pressure load. This shown that after reaching the ultimate load, the center of the bursting disc lost stability in the direction of thickness. Based on the status of stress matrix analysis results of RIKS method, and for solving the nonlinear contact
Shan, Jinhui, Wang, Cheng
Technical Paper
Characterizing shock waves induced by phase change of superheated liquid jets 2022-01-059403/29/2022
The under-expanded nature of flash-boiling spray was considered an important cause of spray collapse via some numerical investigation. However, due to the high optical thickness, the under-expanded nature in flash-boiling jet was difficult to observed by optical diagnosis. The main objective of this study is to prove the existence of under-expanded nature in the gasoline-like fuel (n-hexane) flash-boiling jet under the GDI engine condition, and further reveal the significant influence factors. The experimental examination was carried in a constant volume vessel with ambient pressure ranging from 0.1 bar to 1.0 bar and fuel temperatures from 30℃ to 170℃. In order to capture the flow details in the jet, a high-brightness light source was used in the optical imaging. The shock structure of under-expanded nature was observed in close nozzle region under those conditions above 130℃, and the shock structure was in good agreement with the previous simulation results under the same conditions
Li, Yanfei, Zhang, Jingyu, Ma, Xiao, Shuai, Shijin
Technical Paper
Insulating Component, Molded, Electrical, Heat Shrinkable, Connector and Cable Accessory, Sealing Strain Relief, General Specification ForAS5258A-TEST-REC (Historical)10/13/2021
This specification covers connector and cable accessory heat shrinkable, electrical insulating, molded components fabricated from various polymer based compositions. These components are intended for use as connector and cable accessory components to provide strain relief, electrical insulation, and environmental sealing.
AE-8C1 Connectors Committee
Technical Standard
Insulating Component, Molded, Electrical, Heat Shrinkable, Connector and Cable Accessory, Sealing Strain Relief, General Specification ForAS5258A (Current)10/13/2021
This specification covers connector and cable accessory heat shrinkable, electrical insulating, molded components fabricated from various polymer based compositions. These components are intended for use as connector and cable accessory components to provide strain relief, electrical insulation, and environmental sealing.
AE-8C1 Connectors Committee
Technical Standard
A New Catalyst Technology to overcome Diffusion and Transport Limitations2021-26-021009/22/2021
The purification efficiency of exhaust gas catalysts depends on several factors. One of the most important factors is the diffusivity of the exhaust gases in the catalytic coating layer, especially at moderate to high temperature and space velocity conditions. Porous silica, γ-alumina, zirconia, carbons and many other porous crystalline materials that are commonly used as catalysts and catalyst supports are traversed by a labyrinth of tortuous micro and mesopores. If the connectivity is very low, the labyrinth of pores becomes more difficult to penetrate, increasing the overall “tortuosity” and slowing down the transportation of gas molecules within catalyst layers. A new approach to overcome these diffusion and transport limitations in an exhaust gas catalyst is to create an interconnected network of mesopores and macropores via increase in void fractions within the washcoat components and layers. In this study, various organic and inorganic pyrolyzable pore forming agents (PFAs) were
Gaur, Kanishka, Muthusamy, Vishnuvarthan, Mishra, Sushil, Kukreti, Sumit, Rajan, Bosco, Bartley, Gordon, Trigunayat, Alok
Technical Paper
SAE TOMORROW TODAY: Cummins Innovating Engines to Power the Global Food Economy1315407/16/2021
Whether it's gas, electric or hydrogen-fueled, engines serving the agriculture industry are dynamic. Cummins engines power everything from the farm to the field to the future. Ann Schmelzer, General Manager, Global Ag Business for Cummins, is passionate about problem solving through the lens of technology. Building on Cummins' reputation of reliability, Schmelzer is leading the charge to get their engines into the growing demand of autonomous agriculture. Listen as she shares insights on the current economics of agriculture and ways Cummins is stepping up to meet the needs of the global food economy.
Hineman, Marcie
Podcast
Aluminum Alloy Powder 4.6Cu - 3.4Ti - 1.4B - 0.75Ag - 0.27MgAMS7033-TEST-REC (Historical)06/22/2021
This specification covers an aluminum alloy in the form of pre-alloyed powder.
AMS AM Additive Manufacturing Metals
Material Specification
Aluminum Alloy Powder 4.6Cu - 3.4Ti - 1.4B - 0.75Ag - 0.27MgAMS7033 (Current)06/22/2021
This specification covers an aluminum alloy in the form of pre-alloyed powder.
AMS AM Additive Manufacturing Metals
Material Specification
Wearable, Stretchable Gas SensorTBMG-3850702/01/2021
A team has developed and tested a stretchable, wearable gas sensor for environmental sensing. It combines a newly developed laser-induced graphene foam material with a unique form of molybdenum disulfide and reduced-graphene oxide nanocomposites. The researchers were interested in seeing how different morphologies, or shapes, of the gas-sensitive nanocomposites affect the sensitivity of the material to detecting nitrogen dioxide molecules at very low concentration. To change the morphology, they packed a container with very finely ground salt crystals.
Magazine Article
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).
Magazine Article
Xenon Improves Properties of Maxillofacial and Orthopedic ImplantsTBMG-3854602/01/2021
Tomsk Polytechnic University Tomsk Oblast, Russia
Magazine Article
Electrocoat Compatibilities of Automotive SealersJ1969_202101 (Current)01/07/2021
This SAE Recommended Practice sets forth a method for determining the compatibility of automotive sealers with cathodic electrocoat primer.
Materials, Processes and Parts Council
Recommended Practice
E-Tongue Nanosensor ArrayTBMG-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.
Magazine Article
New Coating Process Lights Porous Electronics and SensorsTBMG-3736408/01/2020
Researchers have shown how to coat glass and plastic with porous titanium dioxide. The fabrication process is straightforward, the materials are cheap, and the ceramic’s gas sensing performance is considerably improved compared with current devices.
Magazine Article
Aluminum Alloy Powder 10.0Si - 0.35MgAMS7018-TEST-REC (Historical)05/11/2020
This specification covers an aluminum alloy in the form of pre-alloyed powder.
AMS AM Additive Manufacturing Metals
Material Specification
Aluminum Alloy Powder 10.0Si - 0.35MgAMS7018 (Current)05/11/2020
This specification covers an aluminum alloy in the form of pre-alloyed powder.
AMS AM Additive Manufacturing Metals
Material Specification
Investigation of the operating conditions on the water and thermal management for a polymer electrolyte membrane fuel cell by one-dimensional model2020-01-085604/14/2020
Water and thermal management is an essential issue that influences performance and durability of a polymer electrolyte membrane fuel cell (PEMFC). Water content in membrane decides its ionic conductivity and membrane swelling favors the ionic conductivity, resulting in decreases in the membrane’s ohmic resistance and improvement in the output voltage. However, if excessive liquid water can’t be removed out of cell quickly, it will fill in the pores of catalyst layer (CL) and gas diffusion layer (GDL) then flooding may occur. It is essential to keep the water content in membrane at a proper level. In this work, a transient isothermal one-dimensional model is developed to investigate effects of the relative humidity of inlet gas and cell temperature on performance of a PEMFC. Comprehensive physical and chemical phenomenon inside the cell is included, especially the mass transfer of hydrogen, oxygen, vapor and liquid water in gas channels, GDL and CL and non-frozen membrane water in
Wang, Xuhui, Dong, Yaqian, Xu, Sichuan
Technical Paper
Wearable Gas Sensor Enhances SensitivityTBMG-3624403/01/2020
A highly sensitive wearable gas sensor for environmental and human health monitoring may soon become commercially available, according to researchers at Penn State and Northeastern University.
Magazine Article
Threads Detect Gases When Woven into ClothingTBMG-3598902/01/2020
A fabrication method was developed to create dyed threads that change color when they detect a variety of gases. The threads can be read visually or even more precisely by use of a smartphone camera, to detect changes of color due to analytes as low as 50 parts per million. Woven into clothing, the gas-detecting threads could provide a reusable, washable, and affordable safety asset in medical, workplace, military, and rescue environments.
Magazine Article
The Influence of the Content and Nature of the Dispersive Filler at the Formation of Coatings for Protection of the Equipment of River and Sea Transport05-13-01-000601/23/2020
To protect ship equipment of river and sea transport, it is suggested to use polymeric protective coatings based on epoxy diane oligomer ED-20, polyethylene polyamine (PEPA) curing agent and filler, which is a departure from industrial production. Thus the purpose of the work is analysis of major dependency of the properties on the content of fillers that allowed to revealed the critical filler content (furnace black) in composites to form a protective coating with the required set of characteristics. The infrared (IR) spectral analysis was used to investigate the presence of bonds on the surface of particles of the PM-75 furnace black, which allows us to assess the degree of cross-linking of the polymer. The influence of the content of dispersed furnace black on the physicomechanical and thermophysical properties and the structure of the protective coating is investigated. For the formation of the coating with increased adhesive properties, the optimum content of the additive is q
Sapronov, Oleksandr, Buketov, Andriy, Sapronova, Anna, Sotsenko, Vitalii, Brailo, Mykola, Yakushchenko, Serhii, Maruschak, Pavlo, Smetankin, Serhii, Kulinich, Andriy, Kulinich, Viacheslav, Poberezhna, Liubov
Journal Article
Embedded Gas and Temperature Sensors for Extreme EnvironmentsTBMG-3582901/01/2020
Innovative process control systems for improved efficiency and lower emissions in current and future fossil-fuel-based power systems and related applications require durable, embedded sensor technology that can operate at higher temperatures and in harsh conditions.
Magazine Article
Q&A: Refrigeration by Twisting FibersTBMG-3571312/01/2019
Dr. Ray Baughman, Director of the Alan G. MacDiarmid Nano Tech Institute at the University of Texas, Dallas, and his team discovered a new technology for refrigeration that is based on twisting and untwisting fibers.
Magazine Article
Precipitation Hardenable Steel Alloy, Corrosion and Heat-Resistant Powder for Additive Manufacturing 16.0Cr - 4.0Ni - 4.0Cu - 0.30NbAMS7012 (Current)11/14/2019
This specification covers a corrosion and heat-resistant steel alloy in the form of pre-alloyed powder.
AMS AM Additive Manufacturing Metals
Material Specification
The Challenge of Replacing Hard ChromeTBMG-3535910/01/2019
The search for a suitable replacement for hard chrome on aerospace components has been a key supply chain priority for aircraft manufacturers. This is because of the documented health risks to workers and the impact on the environment from exposure to hexavalent chromium, a carcinogen that occurs during the chrome plating process and is the most toxic form of chromium.
Magazine Article
Products of Tomorrow: October 2019TBMG-3528610/01/2019
This column presents technologies that have applications in commercial areas, possibly creating the products of tomorrow. To learn more about each technology, see the contact information provided for that innovation.
Magazine Article
The Challenge of Replacing Hard Chrome19AERP10_0310/01/2019
The search for a suitable replacement for hard chrome on aerospace components has been a key supply chain priority for aircraft manufacturers. This is because of the documented health risks to workers and the impact on the environment from exposure to hexavalent chromium, a carcinogen that occurs during the chrome plating process and is the most toxic form of chromium. As a result, chromium is a highly regulated chemical in major markets worldwide. In the European Union, hexavalent chromium falls under the domain of the EU regulation, REACH (Registration, Evaluation, Authorization and Restriction of Chemicals), which establishes guidelines for the safe use of chemicals throughout the supply chain. Chromium is also closely regulated in the United States by OSHA.
Magazine Article
Groove Design - Metal Face SealAIR1108A (Current)06/06/2019
Groove designs presented herein are applicable for use with machined or formed metal seals which are similar in configuration to those shown in figure 3, which operate under internal pressure or in vacuum service and which have been specifically qualified or recommended by the purchaser or the manufacturer for use with this AIR. They are also applicable for use with metal o-rings (e.g., MS9142, MS202 thru MS9205) where interchangeability with machined or formed metal seals is desired. For metal o-ring groove designs where inter-changeability is not a requirement refer to ARP 674.
E-25 General Standards for Aerospace and Propulsion Systems
Information Report
Q&A: Professor Jaime Grunlan, Texas A&M University, College Station, TXTBMG-3414104/01/2019
Professor Grunlan and his team are developing a new flame-retardant coating using renewable, nontoxic materials readily found in nature that could provide effective fire protection for several widely used materials.
Magazine Article
Nickel Alloy, Corrosion and Heat-Resistant, Powder for Additive Manufacturing, 47.5Ni - 22Cr - 1.5Co - 9.0Mo - 0.60W - 18.5FeAMS7008 (Current)03/26/2019
This specification covers a corrosion and heat-resistant nickel alloy in the form of pre-alloyed powder.
AMS AM Additive Manufacturing Metals
Material Specification
Nickel Alloy, Corrosion and Heat-Resistant, Powder for Additive Manufacturing, 60Ni - 22Cr - 2.0Mo - 14W - 0.35Al - 0.03LaAMS7013 (Current)01/03/2019
The intended upper bound of this specification is that the particle size distribution (PSD) of powders supplied shall be <60 mesh (250 µm) and that no powder (0.0 wt.%) greater than 40 mesh (425 µm) is allowed.
AMS AM Additive Manufacturing Metals
Material Specification
Products of Tomorrow: September 2018TBMG-3282709/01/2018
This column presents technologies that have applications in commercial areas, possibly creating the products of tomorrow. To learn more about each technology, see the contact information provided for that innovation.
Magazine Article
5 Ws of a Simple Nerve Gas DetectorTBMG-3285509/01/2018
First responders, soldiers, and scientists in the field.
Magazine Article
Artificial “Blubber” Protects Divers in Frigid WaterTBMG-3248208/01/2018
When Navy SEALs carry out dives in Arctic waters, or when rescue teams are diving under ice-covered rivers or ponds, the survival time even in the best wetsuits is very limited — as little as tens of minutes. Researchers have discovered a process to triple that survival time.
Magazine Article
Wireless Chemical Sensor and Sensing Method for Use TherewithTBMG-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
Magazine Article
An Overview of Microstructural Approaches for Modelling and Improving Sound Proofing Properties of Cellular Foams: Developments and Prospects2018-01-156406/13/2018
Significant advances have been made over the last 15 years in the field of modelling the acoustic properties of foams from the description of their microstructures. It entails a multidisciplinary work at the junction between physico-chemistry and mechanics of porous media, which involves a dialogue between different disciplines and requires the joint development of several techniques (imaging, upscaling, numerical computations, and experimental identification). It seems to be of timely interest to take stock of the methodological developments that have provided guidance on how to manufacture the new generation of foams with enhanced properties and to identify possible future methodological developments.
Perrot, Camille, Hoang, Minh Tan, Chevillotte, Fabien
Technical Paper
Nickel Alloy, Corrosion and Heat-Resistant, Powder for Additive Manufacturing, 62Ni - 21.5Cr - 9.0Mo - 3.65NbAMS7001 (Current)06/08/2018
This specification covers a corrosion and heat-resistant nickel alloy in the form of pre-alloyed powder.
AMS AM Additive Manufacturing Metals
Material Specification
Quick Disconnect for High-Pressure Mate/De-MateTBMG-2905306/01/2018
NASA Kennedy Space Center seeks partners interested in the commercial application of the Quick Disconnect for High Pressure Mate/De-Mate. Designed at KSC, this technology is intended for use in dusty environments where dust particles can contaminate high-pressure connectors, resulting in wear on connector surfaces and unreliable connections. The Quick Disconnect (QD) utilizes the gas supplied by the umbilical to spray on, entrain, and remove dust from the connector surfaces prior to mating.
Magazine Article
Standard Exposed Junction Thermocouple for Controlled Conduction Errors in Measurement of Air or Exhaust Gas TemperatureARP690 (Current)05/03/2018
The thermocouple design recommended herein is presented as one for which the correction to the observed emf, because of thermal conduction along the stem and wires, is within the limits presented in the accompanying figure. On referring to the figure, it is seen that no restriction is placed upon the diameter of the thermocouple or stem, and the longitudinal dimensions are expressed in terms of wire and stem diameters. The type of stem, such as packed ceramic stock, refractory insulating tubing, etc., also is left open to choice. Thus the sizes of wires and supporting stems may be varied over wide ranges to match particular requirements where conduction errors are to be limited or controlled.
E-32 Aerospace Propulsion Systems Health Management
Recommended Practice
Thermo-Mechanical Fatigue Testing of Welded Tubes for Exhaust Applications2018-01-009004/03/2018
Selected ferritic stainless steel sheets for exhaust applications were tested under thermo-mechanical fatigue (TMF) condition in the temperature range of 400-800 °C with partial constraint. Straight welded tubes were used as the testing coupons to withstand large compression without buckling, and to understand the effect of welding as well. Repeated tests confirmed the observed failure scenario for each material type. The hysteresis loop behaviors were also simulated using the mechanism-based integrated creep and fatigue theory (ICFT) model. Although more development work is needed, for quick material screening purpose this type of testing could be a very cost effective solution for materials and tube weld development for exhaust applications.
Quan, Guangchun, Wu, Xijia, Lafleur, Luc, zhang, Zhong
Technical Paper
Simulation of Dynamic Gas Cavity Effects of a Tire under Operational Conditions2018-01-068204/03/2018
The authors are responsible for the development of a structural 3D shell based bead-to-bead model with sidewalls and belt that separately models all functional layers of a modern tire [4]. In this model, the inflation pressure is modeled as a uniform stress acting normal to the shell’s inner face. The pressure can vary depending on the application: prescribed by the MBS-tool to align to a constant pressure specified for a vehicle or scenario, but it can also be modified dynamically to simulate e.g. a sudden pressure loss in a tire [1]. For many applications, this description of the inflation pressure as a time dependent quantity is sufficient. However, there are applications where it is needed to describe the inflation gas using a dynamic gas equation (Euler or Navier-Stokes). One such example is when the tire model is used in NVH (Noise-Vibration-Harshness) applications where the frequency range extends the 200 Hz range. For passenger car tires, a first mode of the inflation gas is at
Gallrein, Axel, Baecker, Manfred, Guan, Jianmin
Technical Paper
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).
Magazine Article
Composite Materials Could Improve Respirator FiltersTBMG-2830402/01/2018
Current gas mask filters counter current threats, but there are large gaps in knowledge about how they do so at the molecular level. Many of the filters were developed to handle a wide range of ever-changing chemical threats, and to work under a variety of different conditions.
Magazine Article
Advanced Carbon Aerogels for Energy ApplicationsTBMG-2830202/01/2018
Carbon aerogels (CAs) are nano-porous carbons comprising a particularly significant class of carbon nano-materials for a variety of sustainable energy applications. Carbon aerogels are specifically promising in that they possess a tunable, three-dimensional, hierarchical morphology with ultrafine cell size and an electrically conductive framework. They are available as macroscopic, centimeter-sized monolithic materials. Carbon aerogels hold great technological promise for a variety of sustainable energy applications including hydrogen and electrical energy storage, desalination, and electrocatalysis.
Magazine Article
Bulk Preparation of Holey Graphene via Controlled Catalytic OxidationTBMG-2817301/01/2018
Researchers at NASA have developed new methods to manufacture carbon materials (e.g., nanotubes, graphene) with holes through the graphitic surface of the particles. The methods generate materials with increased accessible surface area, increased functional groups at damage sites, and improved through-surface molecular transport properties. The materials generated using these techniques are anticipated to be applicable to a variety of industries, especially energy storage (e.g. supercapacitors and batteries) and separation membranes (e.g. for gas, ions, organics, proteins, etc.).
Magazine Article
Q&A: Dr. Zeeshan Ahmed, Senior Sensor Scientist, National Institute of Standards and Technology (NIST), Gaithersburg, MDTBMG-2827701/01/2018
Dr. Ahmed and scientists from NIST and American University are researching the use of metal organic frameworks (MOFs) as the basis for an inexpensive, easy-to-build gas sensing technology. The problem they faced is that newly made MOFs are tiny particles that, in bulk, have the consistency of dust.
Magazine Article
Plasma-Assisted Catalytic Reverse Water Gas Shift ReactorTBMG-2767810/01/2017
For improving CO2 conversions for a low-temperature CO2 methanation process, a mechanism of using reverse water gas shift (RWGS) reaction as an intermediate step to generate the more reactive CO species for the methanation process was developed. The challenge was to achieve useful conversions of RWGS reaction (CO2 to CO by hydrogenation) at low temperatures (200-300 °C), which is not possible with conventional catalytic reactors. Achieving useful conversions (up to ~50%) is not possible at the desired temperature window of 200-300 °C with a conventional catalytic reactor due to equilibrium limitations of the endothermic RWGS reactor.
Magazine Article
ADHESIVES: The Importance of CTE for Assembly ReliabilityTBMG-2772610/01/2017
Adhesive compounds play a critical role in the fabrication of assemblies for electronic, optical, and mechanical systems. In securing multiple components into a single structure, bonding agents such as epoxies and silicones help stabilize the assembly despite the various sources of stress that can arise in the target application. Among these stress factors, differences in thermal expansion of the components of an assembly represent one of the most insidious and potentially damaging sources of stress.
Magazine Article
Magnesium Alloys, Anodic Treatment ofAMSM45202B (Current)09/20/2017
This specification covers the requirements for equipment, materials and procedures to be used in anodic treatments for magnesium base alloys for the purpose of increasing their corrosion resistance or producing surfaces suitable for the application of a protective organic finish.
AMS B Finishes Processes and Fluids Committee
Material Specification
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