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  • Spot-weld element cuts modeling time by 30%
    A closeup of the mesh and weld area shows a natural mismatch in element size and location that makes traditional weld-modeling methods difficult. Manually placing elements to connect panels can easily consume 30% of the total modeling time. VW participated in the design, development, and testing
  • Portable Hardness Test Technology for Assessing Titanium Weld Quality (.pdf)
    Portable hardness testing technology was developed in this project and was based on an oxygen equivalent (OE) database for CP titanium weld metals. The database was created by testing the properties of full penetration autogenous welds made from a number of heats and using different welding
  • Destructive Quality Testing of Welded Steel Tube (.pdf)
    Steady evolution of Non-Destructive Testing equipment has dramatically reduced the number of weld defects being sent to customers. However, even the best NDT equipment does nothing to prevent those defects from occurring. Total reliance on NDT technology can lead to serious losses in productivity
  • Company News 9/25/08
    . opened a new Automation Service Center in Nashville. The 4,100-sq-ft center offers services such as equipment cleaning and repairs, connection and weld testing on a robot, burn-in cycle, as well as robot service, upgrading, programming and operation training services. China's Shanghai Welltech Automation
  • Testing the Strength and Integrity of Welding Studs Attached to Sheet Metal
    The Mountz Weld Stud Test Tool is designed for use during the production of sheet metal products to test the strength and integrity of welds used to attach threaded studs to the sheet metal. A company that manufacturers popcorn machines, conveyor ovens, and toasters in Missouri wanted capability
  • Improving Corrosion Fatigue Performance of AA2219 Friction Stir Welds with Low Plasticity Burnishing (.pdf)
    the weld region in high compression on the. order of -400 MPa. Fatigue testing was performed in. four-point bending at R=0.1 under constant stress. The. corrosion fatigue performance after 100 hours in 3.5%. salt fog improved from 175 MPa for a milled surface to. 225 MPa after LPB processing. LPB
  • Effect of Prior Machining on Residual Stress in Welds (.pdf)
    Lambda Research recently completed a study of residual stress distributions developed in partial J-weld penetrations in nuclear pressure vessels. Stress corrosion cracking (SCC) field failures had occurred near similar welds. Initial phases of this work have been published. Additional testing
  • Suitability of Materials for Pulsed Laser Welding (.pdf)
    Material Coatings/Platings: These can have an affect on weld quality, and generally require testing as case specific. One example of coating sensitivity is gold/nickel or nickel coatings. Coating should be electrolytic, avoiding excessive phosphorus that creates increased cracking susceptibility
  • Applications
    strength. Many aluminum, brass, and copper alloys can also be welded. Weld quality with special materials may have to be determined through testing of prototype samples. The most common fasteners used in electric-arc welding are made from low-carbon steels, with a minimum tensile strength of 60,000 psi
  • Application of Ultrasonic Peening for Fatigue Life Improvement of Automotive Welded Wheels
    The efficiency of Ultrasonic Peening (UP) application for fatigue life improvement of automotive welded wheels was studied based on the results of fatigue testing of real wheels in as-welded condition and after application of the UP. During the fatigue loading, the cracks initiate in the weld toe