The Effect of Surface Enhancement on the Corrosion Properties, Fatigue Strength, and Degradation of Aircraft Aluminum (.pdf)
Corrosion, Stress Corrosion Cracking (SCC) and corrosion fatigue failures of. high strength aircraft aluminums are costly and potentially catastrophic material. problems affecting the aircraft fleet today. As the service lives of aircraft are. extended, the increasing inspection and repair...
Adhesive Bonding of High-Strength Steel (.pdf)
. For such high strength and high (ef-. fective modulus) steels, one encounters. production problems that are dealt with. effectively by the correct adhesives: Spot. 70. welding for these steels requires higher. 60. current and pressures. The electrode service life is lower. The. 50. improved stiffness...
What is Thermal Spraying
. High strength steel. Tungsten carbide chrome. Strong with excellent wear & corrosion resistance. Each thermal spray process uses two powerful characteristics of energy--heat and mechanical force--but in differing ways. In order to achieve a predictable and repeatable result, the process energy must...
Fatigue Life Improvement of Welded Elements by Ultrasonic Peening
tested monocrystalline metal samples immersed. in tetrachloromethane irradiated with ultrasound over a wide frequency range up to 800 kHz. The ultrasound led to increased strain to fracture and increased ultimate tensile strength. Finding that ultrasonic energy was more effective than thermal energy...
Thermal Residual Stress Relaxation And Distortion In Surface Enhanced Gas Turbine Engine Components (.pdf)
, the surface is completely covered, and a. and LSP in Ti-6Al-4V and Inconel 718 used in this. uniform layer of compression is formed. Typical. study are shown in Figures 1 and 2. compressive residual stress distributions reach a. maximum on the order of the alloy yield strength, and. Thermal Relaxation...
The Effect Of Cold Work On The Thermal Stability Of Residual Compression In Surface Enhanced In718 (.pdf)
the endurance limit and extend. is widely used to improve the fatigue life in the. component fatigue life by an order of magnitude in. automotive and aerospace industries. The. high strength structural alloys.[2]. compressive layer delays fatigue crack initiation and. retards small crack propagation...
Overview Of Low Plasticity Burnishing For Mitigation Of Fatigue Damage Mechanisms (.pdf)
Surface enhancement technologies such as shot peening (SP), laser shock peening (LSP), and low plasticity burnishing (LPB) can provide substantial fatigue life improvement. However, to be effective, the compressive residual stresses that increase fatigue strength must be retained in service. LPB...
Effects of Surface Treatment on Fretting Fatigue Performance of Ti-6Al-4V (.pdf)
The fretting fatigue performance of Ti-6Al-4V after. isothermal exposure was explored in test. coupons in low plasticity burnished (LPB), shot. peened (SP) and electropolished (ELP) baseline. conditions. The thermal stability of the. compressive residual stress fields produced by. SP and LPB...
Incorporation of Residual Stresses in the Fatigue Performance Design of Ti-6Al-4V (.pdf)
been recognized [1-4] to. design; rather shot peening is used primarily as. enhance fatigue strength. Engineering. an additional safe guard against fatigue failure. components have been shot-peened or cold. Recently, laser shock processing (LSP) and low. worked to create a surface layer of residual...
Fatigue Performance of Nitinol Round Wire with Varying Cold Work Reductions (.pdf)
processing variables. the mechanical, thermal, and bioreactive properties of nitinol. Plastic deformation through cold wire drawing of most. wire and its suitability for particular applications (Ref 1-3). metallic alloys results in increased mechanical strength that is. Variables may include: ingot...