Woodruff School of Mechanical Engineering



Topologically Interlocked Material Systems: From a material design concept to properties


Dr. Thomas Siegmund


Purdue University, School of Mechanical Engineering


Friday, March 29, 2019 at 11:00:00 AM


GTMI Building, Room Auditorium


Julien Meaud


Topologically interlocked material (TIM) systems are load-carrying assemblies of unit elements interacting by contact and friction, aided by an external or internal confinement. This talk presents our research findings on TIM material system design, manufacturing aspects and mechanical properties. I first review the motivation and underlying drivers to the design of TIM systems. I then discuss manufacturing approaches for TIM systems, all based on assembly processes employ the concept of scaffold as a unifying theme. I will demonstrate how TIM systems emerge as a class of architectured materials with mechanical properties not ordinarily found in monolithic solids. These properties include, but are not limited to, damage tolerance, damage confinement, adaptability, and multifunctionality. The review on mechanical property characteristics links the manufacturing approaches to several relevant material configurations and details recent findings on quasi-static and impact loading, and on multifunctional response.


Thomas Siegmund is professor of Mechanical Engineering at Purdue University. His research group investigates the fundamental question “What is material strength?” and applies finding to technologically relevant problems in wide array of applications. Thomas Siegmund served as the President of the Society of Engineering Science, 2017, and as the NSF Program Director for Mechanics of Materials and Structures from 2013 until 2015.