Abstract: Power plant piping operating at elevated temperatures is subject to several types of service aging-related degradation, such as softening, spheroidization, embrittlement, and creep. When cracks are ...

Abstract: Weld repairs have been performed to 1-1/4Cr-1/2Mo steel girth weldments from a hot reheat pipe returned from service at 1000°F (538°C) for 244,000 h. Shielded metal arc weld (SMAW) ...

Abstract: The use of PBGA (plastic ball grid array) electronic packages has been greatly increased in the last decade due to high I/O densities offered. The fatigue life prediction for them is a ...

Abstract: A quasi-static model of reaming is developed to explain oscillation of the tool during cutting and the resulting roundness errors in reamed holes. A tool with N evenly-spaced teeth often ...

Abstract: In this work, an algorithm for detecting the location of damage in a structure using a finite element model and pre- and post-damage measured modal properties is presented. In particular, an ...