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Reliability calculations of the microelectronic packages require cure dependent viscoelastic constitutive relationship for the packaging polymers in order to predict residual stress and strain fields in the final product. The residual stresses can result in the product failure due to warpage, interfacial delamination, thermal fatigue etc. The previous work in the same group (Ernst et al. 2006, 2003)...
A fast responding and sensitive tritium-in-air monitor, suitable for monitoring in heavy water-based nuclear power reactors has been described. The detector is a flowcell of 6.3 ml volume, made of stainless steel body and Teflon window and packed with 600 mg of 5 μm thick dry plastic scintillator films. It is coupled to a matched pair of photomultipliers and measurement is made in the coincidence...
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