<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Rafael A. Cidade</style></author><author><style face="normal" font="default" size="100%">Daniel S.V. Castro</style></author><author><style face="normal" font="default" size="100%">Enrique M. Castrodeza</style></author><author><style face="normal" font="default" size="100%">Peter Kuhn</style></author><author><style face="normal" font="default" size="100%">Giuseppe Catalanotti</style></author><author><style face="normal" font="default" size="100%">Jose Xavier</style></author><author><style face="normal" font="default" size="100%">Pedro P. Camanho</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Determination of mode I dynamic fracture toughness of IM7-8552 composites by digital image correlation and machine learning</style></title><secondary-title><style face="normal" font="default" size="100%">Composite Structures</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Digital image correlation (DIC)</style></keyword><keyword><style  face="normal" font="default" size="100%">Dynamic fracture toughness</style></keyword><keyword><style  face="normal" font="default" size="100%">Fiber-reinforced composite materials</style></keyword><keyword><style  face="normal" font="default" size="100%">J-Integral</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2019</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/pii/S0263822318320932</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">210</style></volume><pages><style face="normal" font="default" size="100%">707 - 714</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;An optical experimental procedure for evaluating the J-Integral from full-field displacement fields under dynamic loading is proposed in this work. The methodology is applied to measure the J-integral in the dynamic compressive loading of fiber-reinforced composites and to calculate the dynamic fracture toughness associated with the propagation of a kink-band. A modified J-Integral that considers inertia effects is calculated over the full-field measurements obtained by digital image correlation, for double edge-notched specimen of IM7-8552 laminates dynamically loaded in a split-Hopkinson pressure bar (SHPB). A sensibility study is conducted to address the influence of the speckle parameters. The results show good agreement with experimental observations obtained by using a different data reduction method, suggesting the existence of a rising R-curve for the studied material under dynamic loading. Furthermore, it was noticed that the inertia effect can be negligible, indicating a state of dynamic equilibrium in which quasi-static approaches may comfortably be used.&lt;/p&gt;
</style></abstract><notes><style face="normal" font="default" size="100%">n/a</style></notes></record></records></xml>