Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Yi-Hsin Pao"'
Autor:
D. R. Liu, Yi-Hsin Pao
Publikováno v:
Journal of Electronic Materials. 26:1058-1064
The present study investigates the thermal fatigue crack propagation path in a eutectic solder joint between a 2512 leadless chip resistor and a printed wiring board which had experienced thermal cycling between -55 and 125°C. This was achieved thro
Publikováno v:
Journal of Electronic Packaging. 119:163-170
The application of Ball Grid Array (BGA) technology in electronic packaging on high I/O plastic and ceramic packages has grown significantly during the past few years. Although PBGA (plastic BGA) has several advantages over fine-pitch Quad Flat Pack
Publikováno v:
Journal of Electronic Packaging. 117:100-104
The plastic deformation kinetics of 95.5Sn4Cu0.5Ag solder joints were determined in monotonic loading shear over the temperature range of 25°–150°C using three types of tests: (a) constant shear rate, (b) constant shear stress (creep), and (c) di
Autor:
Edward Chan-Jiun Jih, Yi-Hsin Pao
Publikováno v:
Journal of Electronic Packaging. 117:94-99
Failures in electronic packaging under thermal fatigue often result from cracking in solder joints due to creep/fatigue crack growth. A nonlinear, time-dependent finite element analysis was performed to study the effect of critical design parameters
Publikováno v:
IEEE Transactions on Components, Packaging, and Manufacturing Technology: Part A. 18:627-633
The primary objective of this combined experimental and analytical study was to investigate the mechanical behavior of glass/conductive adhesive/Al/sub 2/O/sub 3/ systems with a surface notch, measure the properties of the system at various temperatu
Publikováno v:
Journal of Electronic Packaging. 115:147-152
The thermal cyclic shear stress/strain hysteresis response and associated steady-state creep parameters of 97Sn-3Cu solder joints have been determined using a beam specimen previously developed by Pao et al. (1992a). The solder joint was subjected to
Publikováno v:
Journal of Electronic Packaging. 115:1-8
A solder joint specimen has been designed to determine the stress/strain hysteresis response and fracture behavior of 90 percent wtPb/10 percent wtSn solder alloy. The specimen consists of an Al2O3 beam and an Al 2024-T4 beam bonded together at the e
Autor:
Ron Cooper, Linda J. Baumgartner, Richard L. Allor, R. K. Govila, Yi-Hsin Pao, Scott J. Badgley
Publikováno v:
Journal of Electronic Packaging. 114:135-144
Failures in electronic packages under thermal fatigue usually result from cracking in solder joints due to creep/fatigue crack growth. Understanding the stress/strain behavior of such solder joints is the first step in characterizing their fracture b
Autor:
Yi-Hsin Pao
Publikováno v:
IEEE Transactions on Components, Hybrids, and Manufacturing Technology. 15:559-570
The approach developed is based on the assumption that thermal fatigue crack propagation in solder joints is primarily controlled by C* and J integrals. The effect of microstructural coarsening on crack propagation is discussed. A fracture criterion,
Interfacial Shear and Peel Stresses in Multilayered Thin Stacks Subjected to Uniform Thermal Loading
Autor:
Ellen Eisele, Yi-Hsin Pao
Publikováno v:
Journal of Electronic Packaging. 113:164-172
An analytical approach has been developed to evaluate the interfacial shear and peel stresses in multilayered thin stacks subjected to uniform temperature variation. The approach, which is based on an extension of Suhir’s bimetal thermostat model,