what is the strain value of human skin
component of the stress–strain behavior is associated with ﬁbrillar slippage.21,22,24 The yield and failure re-gion (strains above 0.6 for skin) involves ﬁbril deﬁbril-lation.18 Results of viscoelastic tests conducted on human dermis from donors between the ages of 47 and 86 years suggest that the elastic spring constant of the
According to the study, women averaged 34 nerve fibers per square centimeter of facial skin while men only averaged 17 nerve fibers. Despite psychosocial expectations for men to be tougher than women when feeling pain, these findings illustrate that women's lower pain tolerance and threshold are physical.