@Article{icces.2021.08434,
AUTHOR = {Ei Yamamoto, Yuki Tanifuji, Masaya Nishimoto, Yuki Kawamura},
TITLE = {Residual Strength and Microdamage of Cortical Bone After Non-Destructive Creep Loading},
JOURNAL = {The International Conference on Computational \& Experimental Engineering and Sciences},
VOLUME = {23},
YEAR = {2021},
NUMBER = {1},
PAGES = {17--17},
URL = {http://www.techscience.com/icces/v23n1/42041},
ISSN = {1933-2815},
ABSTRACT = {Bone tissue is a viscoelastic material which shows time-dependent 
mechanical manner. Moreover, it is known that bone microdamage is generated 
by physiological normal mechanical loading in vivo [1-3]. In order to know basic 
insight into the adverse effects of creep loading on bone strength, in the present 
study, we focused on the mechanical behavior of cortical bone after nondestructive creep loading at high stress magnitude. Cylindrical specimens were 
obtained from cortical bone in the longitudinal and tangential direction of bovine 
femur. We statically applied a compressive stress to the specimens (creep group) 
for 24 hours. The specimens without creep loading were used to obtain the data 
on the intact cortical bone (control group). Micro-Vickers hardness tests were 
conducted for the specimens in the control and creep groups. X-ray micro CT 
analyses were performed to detect bone microdamage. The hardness in the creep 
group was lower than that in the control group. Furthermore, X-ray micro CT 
analyses demonstrated that there existed bone microdamage mainly at the outer 
portion of the specimen in the creep group. These results indicate that bone 
microdamage was induced by the creep loading.},
DOI = {10.32604/icces.2021.08434}
}