爱尔兰国立大学应用数学系主任
Michel Destrade教授到我院做学术报告
应宁波大学机械工程与力学学院邀请，爱尔兰国立大学应用数学系主任Michel Destrade教授于2018年12月14日星期五来我院做学术报告，报告题目“Elastic waves in soft matter”。 Destrade教授同时还是浙江大学和爱尔兰都柏林大学的讲座教授，是Proceedings of the Royal Society A 和International Journal of Non-Linear Mechanics两大杂志的编委成员。
报告中，Destrade教授向学院师生介绍了其研究团队在利用声弹性效应对软物质属性进行无损检测的研究成果。Destrade教授首先介绍了用传统标准实验，如拉伸，压缩和剪切等，来测量软物质的力学性能的局限性。由于标准实验具有破坏性并且要求特定的试样尺寸，使得标准实验无法实时测量活体组织的力学性能。在此基础上弹性波无损探测技术应运而生, Destrade教授细致的讲解了利用弹性波对各种软物质，如人的皮肤和猪的大脑等，进行无损物理性质检测的理论基础，数值仿真以及相关实验结果。Destrade教授的研究成果可用于检测大脑是否患有肿瘤等恶性疾病，并能探究不同性别和年龄阶段人体全身langers皮纹线图。
Destrade教授的报告吸引了很多学院的师生前来参加，报告厅里座无虚席，观众对他的介绍反应热烈，不时有深入的讨论和问题。这次报告也吸引了学校之外的许多听众。
Elastic waves in soft matter by Prof. Michel Destrade
Invited by the School of Mechanical Engineering and Mechanics of Ningbo University, Prof. Michel Destrade from National University of Ireland Galway, presented a talk entitled " Elastic waves in soft matter " to a broad audience of researchers and graduate students on Dec.14, 2018.
Prof. Destrade is the Chair of Applied Mathematics at NUI Galway; Adjunct Professor at Zhejiang University and University College Dublin; Directeur de Recherche at the French National Centre for Scientific Research (on leave) and a member of the International Brain Mechanics and Trauma Lab at Oxford University. He is Associate Editor of many prestigious international journals, Reviews Editor for Proceedings of the Royal Society A and Contributing Editor for International Journal of Non-Linear Mechanics. He is acknowledged internationally for his active participation in collective articles, graduate courses, special issues, editorial boards and international bodies. In Galway he is involved in a structured effort to make progress in the fields of nonlinear electro-elasticity, acousto-elasticity theory, nonlinear wave theory and their applications to soft tissues and soft dielectrics.
During his presentation, Prof. Destrade reported the up-to-date research results in his group. Mechanical properties of soft matter, i.e., gels and tissue, are commonly tested by using standard testing protocols, such as tensile testing, simple shear, torsion, etc. These processes are destructive and change the mechanical properties of living tissues considerably. To test tissues non-destructively and non-invasively, the propagation of elastic waves has been investigated in Prof. Destrade’s research group by studying the influence of pre-stress on the speed of elastic waves traveling in a soft solid. This idea forms the basis of the theory of acousto-elasticity, which has been used successfully in the past for "hard" elastic solids such as rocks and metals. In this talk, Prof. Destrade presented the extension of acousto-elasticity theory to "soft" elastic solids subjecting to large deformations in service. Detail information on theoretical, numerical and experimental results generated on gels, human skin, and porcine brain matter were shown by Prof. Destrade.
