Techniques are described for assisting disassembly of an article by triggering shape transition of shape memory material within the article. In one form, a de-fastener (16) is triggered to expand to break apart first and second parts (10a, 10b) which may be integrally formed, or fastened together. In...http://www.google.es/patents/US20020062547?utm_source=gb-gplus-sharePatente US20020062547 - METHOD FOR DISASSEMBLING DIFFERENT ELEMENTS