Topic: From Dual-shape Memory Effect (SME) and Temperature Memory Effect (TME) to Triple-SME and Temperature Sensor

Speaker: Prof. Wei Min Huang, Nanyang Technological University

Time: 4:00 p.m., March 6, 2014

Venue: Conference Room 205, Building 14, SCUT North Campus

Sponsor: School of Materials Science and Engineering

Introduction to Professor Huang:

Dr Wei Min Huang obtained his PhD from Cambridge University, UK and then joined the School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore. His research interest is on various shape memory materials and technologies. He has published over 100 journal papers and two books, one about thin film shape memory alloys and the other about polyurethane shape memory polymers.

Abstract:

After being severely and quasi-plastically deformed, shape memory materials (SMMs) are able to recover their original shape at the presence of the right stimulus. This phenomenon is known as the shape memory effect (SME). 
         Shape memory alloys (SMAs) have been investigated extensively in the past and applications are mainly based two shapes, one is the deformed shape, which is temporary, and the other is the original shape, which is permanent, so that dual-SME might be a proper term for such cases. On the other hand, temperature memory effect (TME) has been reported as another interesting feature of SMAs, in which no macroscopic deformation is involved.

This talk presents two recent developments/applications of SMAs. One is the triple-SME, in which in addition to the temporary shape and permanent shape, there is one intermediate shape during shape recovery upon heating. The other is an extension of the TME as temperature sensor to monitor the overheating temperature.