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RISDynamics Of Board-Level Drop Impact
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The dynamic response of the printed circuit board (PCB) in a standard board-level drop impact test has been modeled as a spring-mass system, a beam, and a plate. Analytical solutions for the ...
Application of Linear Assignment Model for Planning of Robotic Printed Circuit Board Assembly
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A planning method is presented for achieving shorter working-in-process and thus better productivity of printed circuit board assembly. This method finds the optimal sequence of component placement ...
Planning of Component Placement/Insertion Sequence and Feeder Setup in PCB Assembly Using Genetic Algorithm
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new application of the genetic algorithm approach is introduced to solve printed circuit board assembly planning problems. The developed genetic algorithm finds the sequence of component ...
Effects of Construction of Diaphragm Wall Panels on Adjacent Ground: Field Trial
Publisher: American Society of Civil Engineers
Abstract: Common design practice for diaphragm walls is based on the assumption that the walls is “wished-in-place,” which implies that the construction of a diaphragm wall, itself, does not cause any movements or changes in lateral ...
Design for Assembly Factors for Large and Heavy Parts
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Traditional Design for Assembly methods are limited to part sizes between a few millimeters to a few tens of centimeters in overall size and to part weights under a few kilograms. Parts in ...
A Numerical Solution for Potential Flows Including the Effects of Vortex Shedding
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper reports on an attempt to include vortex shedding effects into potential flow calculations using the boundary element method. Significant computational advantages result because of the ...
Finite-Difference Solution of a Both-End-Fixed Orthotropic Composite Beam under Uniformly Distributed Loading Using Displacement Potential Function Formulation
Publisher: American Society of Civil Engineers
Abstract: The elastic solution of an orthotropic composite beam under the influence of uniformly distributed loading is obtained numerically. Two ends of the beam are rigidly fixed, and the fibers are oriented along and perpendicular ...
Board Level Drop Impact—Fundamental and Parametric Analysis
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A fundamental understanding of the dynamics of the PCB assembly when subjected to a half-sine acceleration has also been obtained through analyzing the PCB as a spring mass system, a beam, ...
Difficulties and Hindrances Facing End Users of Electronic Information Exchange Systems in Design and Construction
Publisher: American Society of Civil Engineers
Abstract: Since information and communication technology (ICT) was introduced into the construction industry over a decade ago, the once fledging technologies have now been well developed. ICT has been commonly adopted, particularly ...
Performance of Two Propped Diaphragm Walls in Stiff Residual Soils
Publisher: American Society of Civil Engineers
Abstract: Diaphragm walls with thicknesses ranging from 600–1,200 mm are increasingly used as both temporary and permanent supports for excavations in congested urban areas. This paper describes the performance of two propped ...