Combining vibration test with finite element analysis for the fatigue life estimation of PBGA components

Fatigue Life Prediction for PBGA under Random Vibration Using Updated Finite Element Models

“…The S-N curve of the Sn37Pb [32] Palmgren-Miner's rule is used to assess the fatigue life [33]. This rule states that the incremental damage due to each cycle can be simply added to estimate the fatigue life:…”

Vibrational Fatigue and Structural Dynamics for Harmonic and Random Loads

“…Han et al [14] performed the vibration fatigue analysis of a spot-welded structure with an iterative approach. Research studies relating the fatigue parameters obtained with harmonic excitation to the fatigue life under the random base-excitation were presented by Chen et al [15] and Yu et al [16], where the ball grid array (BGA) solder joints were the subject of analysis. In this study, the second part is focused on the estimation and experimental validation of the fatigue life prediction of a linear Y-shaped structure under a random vibration loading, where the fatigue parameters obtained with the harmonic fatigue tests are used.…”

Effect of solder pads on the fatigue life of FBGA memory modules under harmonic excitation by using a global–local modeling technique

“…First, the forced vibration response in the 5% frequency range around mode 1 (the most destructive mode) is only considered in the calculation of fatigue life while mode 1, 2, and 3 of memory modules are excited in the frequency range between 20 and 2000 Hz in the experiment. Second, the material type and properties used in this research are different from ones found in references [2,[20][21][22] and set 2 of reference [23], so that the material constants found in the literature [2,[20][21][22][23] are not the same as those of SAC305 solder joints of FBGA memory modules. Therefore, failure mechanism in the above literatures could be different from the one occurred in this research.…”

“…The material constants r 0 f and b can be found from the literature [2,[20][21][22][23]. The material constants used to calculate the fatigue life of memory modules are summarized in Table 6.…”