... 2009 23 12 2009 23 12 2009 echo fatigue cracks fatigue testing finite difference time-domain analysis fracture toughness testing notch strength spatial variables measurement structural engineering ultrasonic arrays ultrasonic measurement phased array ultrasound finite...

...Salim Chaki; Gilles Corneloup; Ivan Lillamand; Henri Walaszek The feasibility of an absolute ultrasonic measurement of the tightening force in bolts was investigated. For this purpose, we used both longitudinal and transverse ultrasonic waves (bi-wave method) to remove the time-of-flight...

... pressure vessels welding ultrasonic measurement stress measurement strain measurement nondestructive testing ultrasonic materials testing Pressure vessels, piping and tanks are integral parts of engineering systems and structures. Various types of fluids are contained at a range...

..., and a comparison is made with stress measurement obtained by incremental hole-drilling method, and X-ray diffraction. These results are also validated by thermal relaxation of the plates. The paper discusses also the microstructure influence on ultrasonic measurements and methods for adjusting the ultrasonic...