No abstract

In recent years, fabricated composite wall panels have been widely used in building materials markets at home and abroad, and their main advantages are convenient construction, low energy consumption, and heat and sound insulation. However, fabricated composite wall panels also have some common problems in practical applications, such as large dead weight, weak seismic performance, prone to cracks, and failing to meet the higher energy-saving requirements of thermal insulation external walls. This article analyzes the board material and overall structure of the fabricated composite wallboard, proposes corresponding solutions to make up for its weakness in some performance, and gives the specific construction process and accuracy requirements.

Abstract-Accelerated test is commonly used to obtain reliability data of products by exerting loads over usage conditions for highly reliable and long life products, and it's very significant to decide the acceleration factor (AF) in the test. For electronic equipment, the AF obtained by traditional method can only consider the internal failures caused by the components, without covering the interconnection failures caused by solder joints, pin failures, etc. Thus, a new method based on failure physics is presented in this study to determine the synthetical AF taking both internal failures and interconnection failures into consideration. The AF of the internal failures caused by the components is calculated based on the Arrhenius model, and the AF of the interconnection failures caused by solder joints is captured by reliability simulation test with a software called Calce PWA. Then, the synthetical AF of the electronic equipment can be determined by weighted fusion of both two AFs. Finally, the feasibility and validity of the proposed method can be verified by an application of an embedded electronic device.