Your Selections

Metals
Show Only

Collections

File Formats

Content Types

Dates

Sectors

Topics

Authors

Publishers

Affiliations

Committees

Events

Magazine

new

Validation of a numerical procedure for fatigue assessment of a 325mm brake shoe

Master Sistemas Automotivos-Vagner Nascimento, Giovanni Teixeira
  • Technical Paper
  • 2019-36-0004
Published 2020-01-13 by SAE International in United States
The air brake system is still the most common brake system in use in heavy diesel vehicles. For safety and economic reasons it is imperative to understand the performance and durability (especially fatigue and wear) of every component of a drum brake, particularly the brake shoes. In applications where torque is lower than 20kNm brake shoes are made of ductile metals such as SAE 1030 steel. For such ductile materials Brown-Miller and Fatemi-Socie are the most recommended methods for fatigue crack initiation life prediction. The next pages discuss the validation of these fatigue methods in the case study of a 325mm brake shoe.
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.
new

Development of a Sheet Metal Turbine Housing for a Diesel Engine

Calsonic Kansei Corporation-Masaaki Ashida, Satoru Yokoshima, Shunichi Mitsuishi, Hiroyuki Okamoto
  • Technical Paper
  • 2019-01-2264
Published 2019-12-19 by SAE International in United States
This study presents the development of a new sheet metal turbine housing for a turbo diesel engine that improves diesel vehicle emission and fuel economy. Compared to a conventional solid casting housing, it can realize earlier catalyst light-off using less heat mass and has a longer engine stop period due to higher heat retention through its unique hollow structure constructed with sheet metal. For anticipated thermal deformation, a casting and sheet metal hybrid structure is adopted as a countermeasure to ensure concentricity of the turbine shaft. Consequently, this sheet metal turbine housing shows high environmental performance and reliability.
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.
new

Cleaning and Preparation of Metal Surfaces

AMS B Finishes Processes and Fluids Committee
  • Aerospace Material Specification
  • AMS03_2B
  • Current
Published 2019-12-17 by SAE International in United States

This SAE Standard specifies processes for the cleaning of metal surfaces to remove any extraneous or undesirable material or deposits at any stage of manufacture, storage or service and for the preparation of these surfaces for further treatment. Any necessary stress-relieving treatments are also included. This Standard does not override special preparatory procedures specified in individual Defence Standards, Defence Specifications, DTD Process Specifications, DG Ships Specifications and Naval Defence Standards. It also does not cover cleaning operations associated with the maintenance of internal combustion engines, the preliminary removal of heavy deposits of oil, grease, or dirt accumulated during operational service, preparations for welding and the cleaning of electrical contacts.

Valve Position Sensor Protects Switch Boxes from Salt Environment

  • Magazine Article
  • TBMG-35618
Published 2019-12-01 by Tech Briefs Media Group in United States

Salt is everywhere at Frisia Zout in the Dutch city of Harlingen because salt is precisely what Frisia produces. Since the company's plant is located only a few meters away from the sea, salt is even in the air. This poses a significant problem for the switch boxes that control the company's outdoor valves because the salty air causes exposed metal parts to corrode.

   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Aerospace & Defense Technology: December 2019

  • Magazine Issue
  • 19AERP12
Published 2019-12-01 by SAE International in United States
Engineered Solutions for Enclosure Sealing and InsulationTips for Reducing Error When Using Eddy Current Measuring TechniquesReducing the High Cost of TitaniumStreamlining Post-Processing in Additive ManufacturingSoftware-Defined Analog Filters: A Paradigm Shift in Radio Filter Performance and CapabilitySDR Interface for the NeXtRAD Multistatic Radar SystemElectrodeposition of Metal Matrix Composites and Materials Characterization for Thin-Film Solar Cells Metal matrix composites, which consist of silver-multiwalled carbon nanotube-silver, layer-by-layer stacks, can electrically bridge the cracks (>40 μm) that appear in semiconductor substrates and the composite grid lines.Sensing Applied Load and Damage Effects in Composites with Nondestructive Techniques Comparing and correlating piezoelectrically induced guided waves, acoustic emission, thermography, and X-ray imaging to determine the effects of applied load on a composite structure.Technology Impact Forecasting for Multi-Functional Composites Multi-functional composites offer a possible solution to the conflicting design goals of making new aircraft lighter, stronger, faster, and more environmentally sustainable.Molecular Engineering for Mechanically Resilient and Stretchable Electronic Polymers and Composites Establishing the design criteria for elasticity and ductility in conjugated polymers and composites by analysis of the structural determinants of the mechanical…
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Electrodeposition of Metal Matrix Composites and Materials Characterization for Thin-Film Solar Cells

Aerospace & Defense Technology: December 2019

  • Magazine Article
  • 19AERP12_07
Published 2019-12-01 by SAE International in United States

Metal matrix composites, which consist of silver-multiwalled carbon nanotube-silver, layer-by-layer stacks, can electrically bridge the cracks (>40 μm) that appear in semiconductor substrates and the composite grid lines.

The current trend in both space and terrestrial photovoltaics is to implement high-efficiency, thin-film-based solar cells to reduce weight and materials cost while improving performance. For space photovoltaics, multi-junction (MJ) solar cells have been used almost exclusively due to their high efficiency and high radiation hardness. The efficiency of state-of-practice triple-junction (TJ) cells used in space today is approximately 30% under 1-sun Air Mass 0 (AM0) spectrum.

Annotation ability available

Fundamentals of Fatigue Analysis

  • Professional Development
  • C1875
Published 2019-11-26

Fatigue is a structural failure mode that must be recognized and understood to develop products that meet life cycle durability requirements. In the age of lightweighting, fatigue strength is an important vehicle design requirement as engineers struggle to meet stringent weight constraints without adversely impacting durability. This technical concept course introduces the fatigue failure mode and analysis methods. It explains the physics of material fatigue, including damage accumulation that may progress to product failure over time, and it provides the needed foundation to develop effective fatigue prediction capabilities.

   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Aluminum Alloy, Hand Forgings 8.0Zn - 1.0Cu - 1.6Mg - 0.12Zr (7037-T7452) Solution Heat Treated, Compression Stress Relieved, and Overaged

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4456A
  • Current
Published 2019-11-25 by SAE International in United States
This specification covers an aluminum alloy in the form of hand forgings 11.000 inches (280 mm) and under in nominal thickness and of forging stock of any size (see 8.6).
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Aluminum Alloy, Plate (2397-T87) 2.8Cu - 1.4Li - 0.30Mn - 0.12Zr - 0.10Zn Solution Heat Treated, Cold Worked, and Artificially Aged

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4328B
  • Current
Published 2019-11-25 by SAE International in United States
This specification covers an aluminum alloy in the form of plate 3.000 to 6.000 inch (76.20 to 152.40 mm), inclusive, in nominal thickness (see 8.5).
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Titanium Alloy, Sheet and Strip 4Al - 2.5V - 1.5Fe Electron Beam Single Melted. Annealed

AMS G Titanium and Refractory Metals Committee
  • Aerospace Material Specification
  • AMS6949A
  • Current
Published 2019-11-25 by SAE International in United States
This specification covers a titanium alloy in the form of sheet and strip up to 0.143 inches (3.63 mm), inclusive, in nominal thickness.
This content contains downloadable datasets
Annotation ability available