...Brian D. Roggeman; Venkatesh Raghavan; Peter Borgesen The introduction of less compliant lead free solders together with weaker and more brittle laminate materials has led to major concerns with respect to the resistance of the latter to pad cratering. For purposes of laminate selection as well...

...Wataru Nakayama An analytical model is developed to estimate the heat transfer performance of printed circuit board (PCBs). The PCB under study is the substrate for a ball-grid-array (BGA) package. Under the BGA, the PCB has a belt of densely populated through-vias that penetrate the laminate...

...Jun Xu; Richard A. Wirtz Algebraic models of porosity, specific surface area, and in-plane effective thermal conductivity for stacked, two-dimensional symmetric diamond-weave screen laminations are developed and benchmarked with laboratory experiments. Diamond-weave laminations are found to have...

..., as well as force-per-pin values of the LGA, and correlations were made between the two. Classical laminate theory was utilized to describe the warpage behavior of the assembly and a model was presented to solve the out-of-plane displacements. An overall assessment of the assembly was made and compared...

... closed-form solution can offer a more rapid method to obtain the stresses at the interfaces. An analytical model for ply-level sub-laminate analysis is investigated in this paper. The theory presented treats each layer as a beam-type plate with orthotropic material properties. As an example, the results...

...Keith B. Bowman; David H. Mollenhauer As two dissimilar materials are bonded or cocured at elevated temperatures, residual stresses result upon cooling the layered material system to room temperature. It is well known that the free edges of composite laminates experience interlaminar stresses...

...Xiaoling He; Robert E. Fulton, Fellow ASME Professor Nonlinear laminate theory is applied for the printed wiring board (PWB) dynamic response analysis. Equations of motion for the nonlinear elastic deformation of the isotropic laminates are derived for the dynamic response of a simply supported PWB...

...Yarom Polsky; I. Charles Ume The influence of transverse shear strain in the lamination theory modeling of Printed Wiring Board (PWB) deflection due to support conditions was examined. The in-plane mechanical properties of the core materials of a commercial PWB were measured as a function...