Results 91 to 100 of about 53,800 (254)
Progress in materials and structures at Lewis Research Center [PDF]
The development of power and propulsion system technology is discussed. Specific emphasis is placed on the following: high temperature materials; composite materials; advanced design and life prediction; and nondestructive evaluation.
Davies, R. L. +3 more
core +1 more source
The detection of tightly closed flaws by nondestructive testing (NDT) methods [PDF]
Liquid penetrant, ultrasonic, eddy current and X-radiographic techniques were optimized and applied to the evaluation of 2219-T87 aluminum alloy test specimens in integrally stiffened panel, and weld panel configurations.
Mullen, S. J. +3 more
core +1 more source
Shock and VibrationA nonlinear ultrasonic detection system, employing the wedge/transducer approach to excite and receive Rayleigh surface waves, has been devised for the purpose of detecting and evaluating corrosion fatigue damage in Q235A steel.
Yuanyuan Wang +3 more
doaj +1 more source
Research on Fatigue Damage of Compressor Blade Steel KMN-I Using Nonlinear Ultrasonic Testing
Shock and Vibration, 2017 The fatigue damage of compressor blade steel KMN-I was investigated using nonlinear ultrasonic testing and the relation curve between the material nonlinearity parameter β and the fatigue life was obtained.
Pengfei Wang, Weiqiang Wang, Jianfeng Li
doaj +1 more source
Ultrasonic detection and measurement of fatigue cracks in notched specimens [PDF]
Ultrasonic detection and measurement of fatigue crack propagation in notched specimens of aluminum, titanium, and cobalt alloys and maraging ...
Freche, J. C., Klima, S. J.
core +1 more source
, 1993 The ultrasonic polishing process makes use of the high-frequency (ultrasonic) vibrations of an abradable tool which automatically conforms to the work piece and an abrasive slurry to finish surfaces and edges on complex, highly detailed, close tolerance ...
Gilmore, Randy
core +1 more source
Effect of Ultrasonic Impact Treatment (UIT) on Fatigue Strength of Welded Joints [PDF]
, 2014 Tamaki Suzuki +6 more
openalex +1 more source
Program for establishing long-time flight service performance of composite materials in the center wing structure of C-130 aircraft. Phase 5: Flight service and inspection [PDF]
Inspections of the C-130 composite-reinforced center wings were conducted over the flight service monitoring period of more than six years. Twelve inspections were conducted on each of the two C-130H airplanes having composite reinforced center wing ...
Kizer, J. A.
core +1 more source
机车电传动, 2020 The ultrasonic inspection interval of different types of vehicle axles and the overview of CRH2A EMU axles was introduced. By comprehensively considering the initial crack, critical crack, stress ratio, fracture toughness and effective stress intensity ...
Menghong YE
doaj
Time dependence in large amplitude oscillatory shear: A rheo-ultrasonic study of fatigue dynamics in a colloidal gel [PDF]
, 2014 Christophe Perge +3 more
openalex +1 more source