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조영정(Yeungjung Cho),장건희(Gunhee Jang),장진우(Jinwoo Jang) 한국소음진동공학회 2015 한국소음진동공학회 학술대회논문집 Vol.2015 No.10
The fatigue life of SSD(solid-state drive) due to repeated installation is estimated. In order to obtain appropriate value of inserting force in the analysis, the inserting force was measured statistically by tri-axial load cell. A finite element model of the SSD was developed to simulate the repeated installation. Modal test was performed to verify the developed finite element model. Plastic strain and stress at the concentrated solder ball was calculated by the finite element analysis when the SSD is installed. Fatigue life of the SSD under the repeated installation was experimentally measured. Using Coffin-Manson equation, S-N curve was derived to estimate the fatigue life of the SSD during installation. Using Miner’s rule, it shows that the first installation of SSD affects its life span of the SSD.