Download or read book Temperature Based Stress Analysis of Notched Members written by Eric Hopkins Jordan and published by . This book was released on 1978 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this effort was to develop and demonstrate a method of experimentally determining both elastic and plastic strain distributions in metallic materials. This was accomplished by recording minute temperature changes on the surface of the material as it was subjected to various loading conditions. Mathematical relationships relating these changes to the strain in the material was developed and verified. Much of the success of this effort was due to the development of thermocouple attachment and readout technique that recorded minute temperature changes (0.1 degree centigrade) at ten millisecond sample intervals. This small time period sampling assures that heat has not been conducted away from the thermocouple attachment point. The thermocouples consisting of two .13 mm dissimilar metal wires were attached to the surface 0.1 mm apart by discharging a large capacitor grounded to the specimen. The small size permits the mounting of several thermocouples in a small area. The determination of plastic zone outlines is thereby facilitated.
Download or read book Temperature Based Stress Analysis of Notched Members written by Bela Imre Sandor and published by . This book was released on 1979 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this effort was to develop and demonstrate a method of experimentally determining both elastic and plastic strain distributions in metallic materials. This was accomplished by recording minute temperature changes on the surface of the material as it was subjected to various loading conditions. Mathematical relationships relating these changes to the strain in the material was developed and verified. Much of the success of this effort was due to the development of thermocouple attachment and readout technique that recorded minute temperature changes (0.1 degree centigrade) at ten millisecond sample intervals. This small time period sampling assures that heat has not been conducted away from the thermocouple attachment point. The thermocouples consisting of two .13 mm dissimilar metal wires were attached to the surface 0.1 mm apart by discharging a large capacitor grounded to the specimen. The small size permits the mounting of several thermocouples in a small area. The determination of plastic zone outlines is thereby facilitated.
Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stress Analysis from Temperature Data written by EH. Jordan and published by . This book was released on 1978 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: A measurement system for monitoring temperature change during mechanical deformation is described. The system is based on thermocouples welded directly to the specimen and is capable of distinguishing temperatures smaller than 0.1°C with a response time less than 0.01 s. An equation to relate temperature change to mechanical variables is stated and experimentally verified. The scalar quantity temperature can be used in stress analysis to determine other scalar quantities related to stress or both stress and plastic strain. Three methods are proposed for analyzing temperature data. The methods are discussed in terms of the basic equation and are experimentally verified. A key element in these methods is the use of rapid loading and rapid data collection that results in data not appreciably altered by heat conduction. Collectively these methods can be used to detect plastic strains as small as 0.0003 m/m in mild steel, to determine magnitudes of specific plastic work, and to determine pressure for elastic deformation. This paper discusses the theoretical and experimental foundations for techniques potentially useful to the study of notched members.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Principles and Methods of Temperature Measurement written by Thomas D. McGee and published by John Wiley & Sons. This book was released on 1988-05-19 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concept of temperature. The thermodynamic temperature scale. Entropy, temperature and statistical mechanics. The international practical temperature scale. General characteristics of temperature measuring devices and treatment of data. Liquid-in-glass thermometers. Sealed liquid or gas sensing instruments and bimetallic sensors. Electrical resistance temperature measurement using metallic sensors. Thermistors and semiconductors for temperature measurement. Thermoelectric temperature measurement. Theory of radiant heat transfer as a basis for temperature measurement bu radiant techniques. The disappearing filament optical pyrometer. Photoelectric optical pyrometers (automatic and infrared). Total radiation pyrometers. Novel methods of temperature measurement. Pyrometric cones. Calibration methods. Installation effects. Dynamic response of sensors. Temperature instrumentation and control. Thermocouple reference tables.
Download or read book Finite Element Analysis of Notched Specimens with Experimental Verification at Room and Elevated Temperatures written by Matthew E. Melis and published by . This book was released on 1983 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CAB Current Awareness Bulletin written by and published by . This book was released on 1979 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermographic Stress Analysis of Isotropic Materials written by Neal Floyd Enke and published by . This book was released on 1989 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1988 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engine Structures written by and published by . This book was released on 1988 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cavities and Cracks in Creep and Fatigue written by John Gittus and published by Elsevier Science & Technology. This book was released on 1981 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low Cycle Fatigue and Elasto Plastic Behaviour of Materials 3 written by K.T. Rie and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 911 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceeds of the Third International Conference on Low Cycle Fatigue and Elasto-plastic Behaviour of Materials, Berlin Congress Center, Berlin, Germany, 7-11 September 1992
Download or read book Theory of Notch Stresses written by Heinz Neuber and published by . This book was released on 1946 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1973 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The CRC Handbook of Mechanical Engineering written by D. Yogi Goswami and published by CRC Press. This book was released on 2004-09-29 with total page 2690 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of this standard-setting handbook provides and all-encompassing reference for the practicing engineer in industry, government, and academia, with relevant background and up-to-date information on the most important topics of modern mechanical engineering. These topics include modern manufacturing and design, robotics, computer engineering, environmental engineering, economics, patent law, and communication/information systems. The final chapter and appendix provide information regarding physical properties and mathematical and computational methods. New topics include nanotechnology, MEMS, electronic packaging, global climate change, electric and hybrid vehicles, and bioengineering.
