already demonstrated their suitability in these areas [6]. And as the development of the atomic force microscope (AFM)‚1 interest in microfabricated cantilevers has grown since 1986 [7]. By measuring the resonance frequency changes or cantilever bending due to additional mass Corresponding author. Fax: +86 514 7975244. E-mail address: xyhu@yzu.edu.cn (X. Hu). 1 Abbreviations used: AFM‚ atomic force microscope; MC‚ microfabricated cantilever; PZT‚ lead zinconate titanate; BSA‚ bovine serum albumin
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VIBRATION ANALYSIS FOR ELECTRONIC EQUIPMENT THIRD EDITION Dave S. Steinberg Steinberg & Associates and University of California‚ Los Angeles A WILEY-INTERSCIENCE PUBLICATION JOHN WILEY & SONS‚ INC. New York Chichester Weinheim Brisbane Singapore Toronto This book is printed on acid-free paper. @ Copyright G2000 by John Wiley & Sons‚ Inc. All rights reserved. Published simultaneously in Canada. No part of this publication may be reproduced‚ stored in a retrieval system or transmitted
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modified by the Romans. The Ballista was created to increase the range and power of the crossbow‚ and was the first catapult. Two wooden arms are attached to a piece of rope; the rope was made of hair or sinew. The rope was attached to the beam and pulled back‚ bending the arm back. When released the Ballista would shoot arrows at the enemy with expert accuracy. However its accuracy was great it lacked the power of the Mangonel and the Trebuchet. The Springald’s design is close to that of the ballista
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pull F . Find the total elongation. 2. The Young‘s modulus of a material is 200kN/mm2 and its rigidity modulus is 80kN/mm2 . Determine its bulk modulus. 3. What is point of contraflexure? In which beam will it occur? 4. Derive the relation between the intensity of load and shear force‚ in bending theory. 5. Draw the shear stress distribution diagram for an Isection. 6. Derive an expression for the power transmitted by a circular shaft in S.I. units‚ which is subjected to a torque T in N m.
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Ship Stability for Masters and Mates Ship Stability for Masters and Mates Fifth edition Captain D. R. Derrett Revised by Dr C. B. Barrass OXFORD AUCKLAND BOSTON JOHANNESBURG MELBOURNE NEW DELHI Butterworth-Heinemann Linacre House‚ Jordan Hill‚ Oxford OX2 8DP 225 Wildwood Avenue‚ Woburn‚ MA 01801-2041 A division of Reed Educational and Professional Publishing Ltd A member of the Reed Elsevier plc group First published by Stanford Maritime Ltd 1964 Third edition (metric) 1972 Reprinted
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Transverse Vibration of Beam Lab Report Introduction This experiment aimed to study the forced damped transverse vibration of a beam and verify Dunkerley’s empirical formula. According to Dunkerley’s empirical formula‚ 1f2=1fb2+1fω2 where f referring to the natural frequency of heavy beam with central load fb referring to the natural frequency of heavy beam only fω referring to the natural frequency of light beam with central load M By using the results of light damping‚ Dunkerley’s
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CHAPTER 1 INTRODUCTION Rotor dynamics is the study of rotating machines and has a very important part to play throughout the modern industrial world. Rotating machinery is used in many applications such as Turbo machinery‚ Power stations‚ Machine tools‚ Medical equipment‚ etc. Failure of machinery in applications such as aero engines‚ turbo-machines‚ space vehicles‚ etc. creates enormous repair costs and more importunately may put human life in danger. Rotor dynamics is a collective terms for
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Clearance requirements usually lead to the use of statically indeterminate structure layout for portals‚ and approximate solutions are often used in their analysis. Consider the portal shown in all the member of which are capable of carrying bending and shear as well as axial force. The legs are hinged at their base and rigidly connected to the cross girder at the top. This structure is statically indeterminate to the first degree; hence‚ one assumption must be made. Solution of this type of
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Diffraction refers to various phenomena which occur when a wave encounters an obstacle. In classical physics‚ the diffraction phenomenon is described as the apparent bending of waves around small obstacles and the spreading out of waves past small openings. Similar effects occur when a light wave travels through a medium with a varying refractive index‚ or a sound wave travels through one with varying acoustic impedance. Diffraction occurs with all waves‚ including sound waves‚ water waves‚ and electromagnetic
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HANDBOOK ON REINFORCEMENT AND DETNLING MANAK BHAVAN. 9 BAHADUR 8HAH 2AFAR MARG NEW DELHI110 002 BUREAU OF INDIAN STANDARDS SP 34 : 1987 FIRST PUBLISHED AUGUST 1987 FIRST REPRINT DECEMBER 1992 SECOND REPRINT NOVEMBER 1995 THIRD REPRINT DECEMBER 1996 FOURTH REPRINT JULY 1997 FIFTH REPRINT MARCH 1999 0 BUREAU OF INDIAN STAND.4RDS UDC 666.982.24(021) ISBN 81-7061-006-O PRICE Rs.600.00 PRINTED IN INDIA AT NUTAN PRINTERS‚ F-89/12‚ OKHLA INDUSTRIAL AREA‚ PHASE-I‚ NEW DELHI-110020
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