PSI - Issue 28

Yuichi Otsuka et al. / Procedia Structural Integrity 28 (2020) 1018–1023

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Y.Otsuka et al. / Structural Integrity Procedia 00 (2020) 000–000

(a) AE voltage

(b) IR temperature history

(c) Thermal image of the cubic speci men

Fig. 2. Damage behavior of porous simulated bone under cyclic compression at σ a = -0.75 [MPa], R = 10, f = 10Hz.

(a) IR temperature change

(b) Thermal image be fore loading

(c) Thermal image af ter 2 . 0 × 10 3 cycles

Fig. 3. Damage behavior of porous simulated bone under cyclic compression at σ a = -1.8 [MPa], R = 10, f = 10Hz.

dislocation of the cup or its revision. Clinical reports have only emphasized the biological factors, such as osteolysis or infection[2]. Our result firstly revealed the critical mechanical factor to determine the extent of loosening of the acetabular cup.