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micromechanics

Micromechanical Exfoliation and Graphene: 1999 papers and brief discussion of them

Submitted by Rod Ruoff on

The discovery of a new material type, graphene and extremely thin platelets of graphite, was discussed in several articles from my research group published in 1999:

Lu XK, Huang H, Nemchuk N, and Ruoff RS, Patterning of highly oriented pyrolytic graphite by oxygen plasma etching, APPLIED PHYSICS LETTERS, 75, 193-195 (1999).

On the thermomechanical coupling of shape memory alloys and shape memory alloys composites

Submitted by Yuval Freed on

Smart materials have received much attention in recent years, especially due to their various applications in smart structures, medical devices, actuators, space and aeronautics. Among these
materials, shape memory alloys exhibit extremely large, inelastic, recoverable strains (of the order of 10%), resulting from transformation between austenitic and martensitic phases. This
transformation may be induced by a change, either in the applied stress, the temperature, or both.

Void-induced strain localization at interfaces

Submitted by Anonymous (not verified) on

We published this paper in APL on a study of the deformation near interfaces. It provides insight in the strain localization at the interface and its influence on the deformation in bulk metals. 

Abstract An optical full-field strain mapping technique has been used to provide direct evidence for the existence of a highly localized strain at the interface of stacked Nb/Nb bilayers during the compression tests loaded normal to the interface. No such strain localization is found in the bulk Nb away from the interface. The strain localization at the interfaces is due to a high void fraction resulting from the rough surfaces of Nb in contact, which prevents the extension of deformation bands in bulk Nb crossing the interface, while no distinguished feature from the stress-strain curve is detected.

New Book: Computer Simulations of Dislocations, by Vasily V. Bulatov and Wei Cai

Submitted by Cai Wei on

Companion web site http://micro.stanford.edu ISBN:0-19-852614-8, Hard cover, 304 pages, Nov. 2006, US $74.50.

This book presents a broad collection of models and computational methods - from atomistic to continuum - applied to crystal dislocations. Its purpose is to help students and researchers in computational materials sciences to acquire practical knowledge of relevant simulation methods. Because their behavior spans multiple length and time scales, crystal dislocations present a common ground for an in-depth discussion of a variety of computational approaches, including their relative strengths, weaknesses and inter-connections. The details of the covered methods are presented in the form of "numerical recipes" and illustrated by case studies. A suite of simulation codes and data files is made available on the book's website to help the reader "to learn-by-doing" through solving the exercise problems offered in the book. This book is part of an Oxford Series on Materials Modelling.

New Book: Fundamentals of Micromechanics of Solids, by Jianmin Qu and Mohammed Cherkaoui

Submitted by jqu on

Fundamentals of Micromechanics of Solids, Jianmin Qu, Mohammed Cherkaoui
ISBN: 0-471-46451-1, Hardcover, 400 pages, August 2006, US $120.00

PART I: LINEAR MICROMECHANICS AND BASIC CONCEPTS

Chapter 1 INTRODUCTION

  • 1.1 Background and Motivation
  • 1.2 Objectives
  • 1.3 Organization of Book
  • 1.4 Notation Conventions
  • References

Chapter 2 BASIC EQUATIONS OF CONTINUUM MECHANICS

Lectureships at Cambridge University

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Applications are invited from suitably qualified candidates for three University Lectureships. They should have a proven record of scholarship in experimental and/or theoretical research involving Engineering Materials, Solid Mechanics, Mechanics of Biological Materials or Computational Mechanics. The lecturers will be expected to contribute directly to the research and teaching of the Mechanics, Materials and Design Division of the Engineering Department. This Division enjoys an international reputation for high-quality, innovative research in materials design and characterisation, including novel micro-architectured materials, bulk high-temperature superconducting materials, and increasingly in biological materials.

The posts will involve contributing to the teaching of the undergraduate course in Engineering, leading to the BA and MEng degrees. The successful candidates will take up the appointments 1 October 2006 or as soon as possible thereafter. The appointment will be for 5 years in the first instance with the possibility of reappointment to the retiring age subject to satisfactory performance. The current pensionable scale of stipends is in the range of £25,565-£39,303 per annum.

Further particulars and an application form may be obtained from the Personnel Office, Department of Engineering, Trumpington Street, Cambridge CB2 1PZ, UK (tel +44 (0) 1223 332615, fax +44 (0) 1223 766364, email personnel-appointments [at] eng.cam.ac.uk).

Applications should be sent to this address no later than by Friday 9 June 2006 and include a completed form, a curriculum vitae, a list of publications, and a one-page statement of research interests and future plans. Informal enquiries may be made to Professor Norman Fleck (telephone +44 (0)1223 332650 or email mj [at] eng.cam.ac.uk). The University is committed to equality of opportunity