Cracking failures in lead-on-chip packages induced by chip

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Read Online or Download Cracking failures in lead-on-chip packages induced by chip backside contamination :MASAZUMI AMAGAI, HIDEO SENO and KAZUYOSHI EBE. IEEE Transactions on Components, Packaging and Manufacturing Technology, Part B, 18(1), 119 (February 1995) PDF

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Extra info for Cracking failures in lead-on-chip packages induced by chip backside contamination :MASAZUMI AMAGAI, HIDEO SENO and KAZUYOSHI EBE. IEEE Transactions on Components, Packaging and Manufacturing Technology, Part B, 18(1), 119 (February 1995)

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The internal pressure gradient change of the pressure pipe is relatively uniform, indicating the relationship between head loss and the length of pressure pipe is approximate linear, which verify that the head loss is caused by frictional head loss from the side. 3. The pressure distribution of pipe wall The pressure distribution of bending positions (D and E) are shown in figure 4 and figure 5, it is shown that the pressure of upper part of bending position is relatively bigger but the lower part is relatively smaller, the reason is that the water flow in the pipe is effected by the curvature of bending position, the water flow is thrown to the upper part which has larger curvature radius under the function of centrifugal force, causing much water flow is pushed to the upper part wall, therefore, the water pressure increases.

Therefore, it is difficult to assess the integrity of the pile from the admittance curve. Applied Mechanics and Materials Vol. 509 33 Acknowledgements This research is supported by the college students science and technology innovation project of Zhejiang province (Grant No. 2012R420025). com; Mobile phone, (+86) 13858110682. G. K. X. Lei, Torsional dynamic analysis of single piles by time-domain BEM, Journal of Sound and Vibration. 174 (1994) 505-519. M. Liu, M. Novak, Dynamic response of single piles embedded in transversely isotropic layered media, Earthquake Engineering and Structural Dynamics.

Due to the seismic dynamic action, sand is vulnerable to liquefaction, along with uneven settlement of the building foundation, and then the building structure is damaged. The secondary disaster caused by liquefaction often gives rise to serious casualties and great economic losses. Therefore, it is necessary to effectively predict sand liquefaction and to propose an accurate determination method. Saturated Sand Liquefaction Mechanism and Influencing Factors The word “liquefaction” is defined by American Society of Civil Engineers as “a function or process of transforming material into a liquid” [3].

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