Frozen stress photoelastic assessment of load distribution around an ellipsoid
The experiment indicates a more uniform of shear stress than that predicted by the shear lag model, suggesting that the model underestimates the magnitude of fibre loading, especially at low fibre aspect ratios. Eshelby type models, on the other hand, successfully predict the average phase stresses, but not the form of stress varying within the fibres.
Frozen stress photoelastic fringe pattern during fibre pushout
The experiment indicates a more uniform of shear stress than that predicted by the shear lag model, suggesting that interfacial shear de-bonding strength values obtained from de-bonding loads on the basis of that model may be overestimates. (See 'The use of single fibre pushout testing to explore interfacial mechanisms in SiC monofilament-reinforced Ti-I. A photoelastic study of the test', Watson and Clyne, Acta metall. mater. Vol 40, No 1, pp 131-139, 1992 for more details.)
Birefringence in a film of polyethylene
The colours in the image are the result of birefringence and relate to the residual stress in the film. The colour is generally uniform (with some contrast where an additional thickness of film exists or where wrinkling has resulted in a different apparent thickness). This is indicative of both a uniform film thickness and of the uniformity of the drawing process used to make the film. In the region of the tear, however, the colours indicate strain-induced orientation: because the material is
Birefringence in a film of polypropylene
The colours in the image are the result of birefringence and relate to the residual stress in the film, following the biaxial stretching process. The uniformity of the colour (with contrast only where an additional thickness of film exists or where wrinkling has resulted in a different apparent thickness) is indicative of both a uniform film thickness and of the uniformity of the drawing process used to make the film. Note that unlike polyethylene, the film has not been permanently strained in
Science teaching with technology (ECIT)
There is an evident need to improve the teaching of sciences. Therefore the ECIT Web page has been designed to assist the teaching of physics, chemistry and biology to secondary students. Considering technology as a mean and not as an end for teaching, the ?ECIT Model? was developed following pedagogic as well as design criteria. Its? implementation requires a specific classroom outline, the use of certain technological tools and an efficient interface, to achieve a working environment (not only
Learning Virtually: A Paradigm Shift in Design Education
We still think of architectural design education in terms of a "classroom" paradigm, that is, of an instructor teaching design skills to a class of students in a face-to-face format. However, emerging communication and collaboration technologies have created tremendous new opportunities to distribute students and faculty, while maintaining a close personal contact. This paper discusses and characterizes several aspects of the evolving paradigm of teaching design made possible by the ability to
John Sterman - "A Banquet of Consequences" – 2010 MIT SDM Conference on Systems Thinking for Conte
"A Banquet of Consequences: Systems Thinking and Modeling for Climate Policy" is a presentation given by John Sterman, Jay W. Forrester Professor of Managment, MIT Sloan School of Management; Professor of System Dynamics and Engineering Systems, MIT; Director, MIT System Dynamics Group at the MIT System Design and Management's 2010 Systems Thinking for Contemporary Challenges Conference on October 21, 2010.
Please reference the link below for John Sterman's presentation
http://sdm.mit.edu/syst
Advances in nanotechnology
In this podcast, Professor Moriarty discusses nanotechnology, and how it has led to a convergence of the traditional sciences. He talks about the commercial applications of nanotechnology such as hard disk technology in laptops, stain free materials and fabrics, self-cleaning windows and advanced water filtration.
He also touches on some of the myths about nanotechnology as well as some of the real dangers of Nanotechnology and the steps governments are taking to regulate it.
Professor Moriart
Exam 99 pdf
Exam 99 pdf - UNSPECIFIED
Keywords:convergence partial sums
Lecture notes
Lecture notes - UNSPECIFIED
Keywords:uniform continuity
The Future of Science
Canadian National Science Advisor and former University of Nottingham graduate, Professor Carty addresses the graduating class of 2006.
Professor Carty speaks of his upbringing as the son and grandson of men who worked in the coal industry and the struggles that came with it. He speaks of his love of Chemistry from a young age when he would find discarded pieces of calcium carbide from the mine and created explosions by dropping
Professor Arthur J Carty
Do schools today kill creativity? Education guru Sir Ken Robinson makes an entertaining (and profoundly moving) case for creating an education system that nurtures creativity, rather than undermining it.
Conducting a Joint Course on Software Engineering Based on Teamwork of Students
For the previous six years, under the auspices of the ``Stability Pact of South-Eastern Europe'' and DAAD, a joint project for developing a course in ``Software Engineering'' has been conducted. The intention of the project was to enable usage of shared materials for software engineering courses at a wide range of universities in participating countries. During school-year 2004/05, for the first time the same course, with the same case study, and the same assignments has been conducted at the Hu
Informational technologies in resolving the social issues of school communities in Uzbekistan
This article examines the experience of 40 schools of Uzbekistan in usage of Informational technologies in resolving the social issues of their communities. The article describe the projects that were used by schools in the framework of the "Global Connections and Exchange - Uzbekistan" programme during the 2005-2007 academic years, and results of the projects and their positive experience.
Magnetic Field Activities for the High School Classroom
The following unit is designed to acquaint the student with the magnetic field. The assumed average student has some familiarity with the uniform gravitational field of classical Newtonian dynamics and kinematics lessons. This is not required however. The unit is meant to introduce the idea of a field through investigations of magnetic fields as produced by various common magnetic materials and direct currents. The difference between a magnetic field and a gravitational field is that a gravitati
Florida Shipwrecks: 300 Years of Maritime History
This is a travel itinerary featuring 13 historic shipwrecks in waters near Florida, a convergence point for maritime trade routes. Learn about the historical significance of these 13 shipwrecks. See photos and an essay on Florida maritime history.
Boxing students, Pomona College
Pomona College students Winston Dickson and William Wharton box with gloves in front of the old Pomona College gym. (Dickson is on the left and Wharton is on the right.)
Football captain Wallace Robb, Pomona College
Pomona College student Robb Livingstone poses for a photograph in his football uniform on the athletic field.
Baseball player, Pomona College Prep
Pomona College Prep student Stacey Clapp poses for a photograph inside Renwick Gymnasium wearing his baseball uniform.
Pomona College student in residence hall
A student in a large hat sits in a rocking chair with his feet propped up on a stool. He is holding an open book and smoking a pipe. An upright piano behind him is decorated with photographs.
