Failure mechanism and reliability test method for USB interface circuitry on CPUs for mobile devices

2012 ◽  
Vol 52 (9-10) ◽  
pp. 2014-2018 ◽  
Author(s):  
Jae-Seong Jeong
Keyword(s):  
Failure Mechanism ◽  
Mobile Devices ◽  
Test Method ◽  
Reliability Test ◽  
Usb Interface ◽  
Interface Circuitry

Comprehensive implementation of the magnetic contact reliability test method

2020 ◽  
Author(s):  
D.S. Loginov ◽  
T.A. Kholomina ◽  
V.G. Litvinov ◽  
N.B. Rybin ◽  
A.R. Semenov ◽  
...  
Keyword(s):  
Test Method ◽  
Reliability Test

Experimental study on the behavior of carbon fiber reinforced polymer sheets bonded to concrete

2006 ◽  
Vol 33 (11) ◽  
pp. 1438-1449 ◽  
Author(s):  
Ayman S Kamel ◽  
Alaa E Elwi ◽  
Roger J.J Cheng
Keyword(s):  
Carbon Fiber ◽  
Failure Mechanism ◽  
Test Method ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Bond Behavior ◽  
Cfrp Sheets ◽  
Reinforced Polymer ◽  
Carbon Fiber Reinforced

This paper presents a study on the interfacial behavior of carbon fiber reinforced polymer (CFRP) sheets when applied to concrete members as external reinforcement. Two bond test methods that are detailed in the paper were used in separate test series to study the bond behavior and failure mechanism of CFRP sheets bonded to concrete. A modified push-apart test method was proposed and tested. It was concluded that there existed an effective length beyond which there will be no increase in the ultimate capacity of the joint. An experimental test method to determine the effective bond length was also proposed and tested. The strains at the edge of the CFRP sheets are consistently higher than those at the center. The anchorage requirements for the CFRP sheets were also investigated in this study. Anchor sheets placed at 90° to the primary test sheets and bonded underneath the tested sheet showed better or equivalent overall bond behavior compared with those bonded on top of the tested sheet. The distance at which the anchor sheet is placed from the crack does not appear to change the bond behavior.Key words: bond, concrete, debonding, failure mechanism, carbon fiber reinforced polymer (CFRP) sheets, anchor sheets.

Study on Reliability Test Method of Heavy Duty Vehicle Based on Proving Ground

2012 ◽  
Vol 614-615 ◽  
pp. 460-463
Author(s):  
Yu Zhuo Men ◽  
Hai Bo Yu ◽  
Xin Pan
Keyword(s):  
Load Distribution ◽  
Correlation Equation ◽  
Test Method ◽  
Reliability Test ◽  
Test Results ◽  
Heavy Duty ◽  
Test Specifications ◽  
Heavy Duty Vehicle ◽  
Load Carrying ◽  
Cumulative Fatigue Damage

A new method for correlation test was presented to study the reliability of a heavy duty vehicle, and the method can combine the real customer usage with the enhancement test on proving ground, and avoid the test blindness. Aiming at the data that were tested on the typical pavements of the customer and enhancement roads of proving ground, the rain-flow counting method was used to obtain the load distribution matrixes , according to the correlation equation, the cumulative fatigue damage and loading spectrums of the 90% customer and proving ground were optimized and calculated. Through the correlation analysis, the pavements enhancement coefficient and the reliability test specifications were obtained. The test results indicate that the new specifications can predict the potential failures of the load carrying structures quickly, shorten the test cycles.

Study on the Test Method for High Temperature and Heavy Loaded Grease Bearing Life

2011 ◽  
Vol 141 ◽  
pp. 529-533
Author(s):  
Yun Gen Xu ◽  
Ze Yu Weng ◽  
Hong Wu You ◽  
Yan Qin Zheng ◽  
Xiao Ping Huang
Keyword(s):  
High Temperature ◽  
Failure Mechanism ◽  
Test Temperature ◽  
Test Method ◽  
Life Test ◽  
Bearing Life ◽  
Temperature Load ◽  
Main Factors ◽  
Running Mode

Temperature, load and rotate speed are the main factors which influence grease bearing life are presented by means of study on failure mechanism of grease. According to the test demands of high temperature and heavy loaded grease bearing life, test temperature, load and rotate speed of grease bearing life test are analyzed and discussed, presented that different greases should apply different test temperature. In addition, the filling amount of grease and test running mode of the grease bearing life test are discussed.

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