Editing Luffa (section)

===Dynamic loading===
The mechanical properties of Luffa sponges change under different [[strain rate]]s. Specifically, energy adsorption, [[compressive stress]], and plateau stress (which is in the case of foam materials corresponds to the yield stress) are enhanced by increasing the strain rate.<ref name=":0" /><ref name=":3">{{Cite journal|date=2013-07-01|title=Behaviour of luffa sponge material under dynamic loading|url=https://www.sciencedirect.com/science/article/abs/pii/S0734743X13000110|journal=International Journal of Impact Engineering|language=en|volume=57|pages=17–26|doi=10.1016/j.ijimpeng.2013.01.004|issn=0734-743X|last1=Shen |first1=Jianhu |last2=Xie |first2=Yi Min |last3=Huang |first3=Xiaodong |last4=Zhou |first4=Shiwei |last5=Ruan |first5=Dong |bibcode=2013IJIE...57...17S }}</ref> One explanation for this is that the luffa fibers undergo more axial deformation when dynamically loaded (high strain rates) than when [[Quasistatic loading|quasi-statically]] loaded (low strain rates).<ref name=":3" />