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A stochastic visco-hyperelasitc model of human placenta tissue for finite element crash simulations
Placental abruption is the most common cause of fetal deaths in motor-vehicle crashes, but studies on the mechanical properties of human placenta are rare. This study presents a new method of developing a stochastic viscohyperelastic material model of human placenta tissue using a combination of...
Effect of frozen storage on dynamic tensile properties of human placenta
Dynamic mechanical properties of placenta tissue are needed to develop computational models of pregnant occupants for use in designing restraint systems that protect the fetus and mother. Tests were performed on 21 samples obtained from five human placentas at a rate of 1200 %/s using a set of...
Characterization of ovine utero-placental interface tensile failure
Data on the strength of the utero-placental interface (UPI) would help improve understanding of the mechanisms of placental abruption (premature separation of the placenta from the uterus) during motor-vehicle crashes involving pregnant occupants. An ovine model was selected for study because like...
Fetal outcome in motor-vehicle crashes effects of crash characteristics and maternal restraint.
This project was undertaken to improve understanding of factors associated with adverse fetal outcomes of pregnant occupants involved in motor-vehicle crashes. In-depth investigations of crashes involving 57 pregnant occupants were performed. Maternal and fetal injuries, restraint information,...
Quantifying dynamic mechanical properties of human placenta tissue using optimization techniques with specimen-specific finite-element models
Motor-vehicle crashes are the leading cause of fetal deaths resulting from maternal trauma in the United States, and placental abruption is the most common cause of these deaths. To minimize this injury, new assessment tools, such as crash-test dummies and computational models of pregnant women,...