Download or read book Shock Spectra Measurements Using Multiple Mechanical Gages written by V. F. DeVost and published by . This book was released on 1967 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: The performance and characteristics of a family of oscillatory and nonoscillatory mechanical gages, used to measure shock spectrally, are discussed. The gages are simple, self-recording, mass-spring devices ranging in natural frequency from 12 Hz to 18.1 kHz. Response of the gages to simple and complex shocks is compared with analog responses to the same shocks. The use of a number of mechanical gages to measure shock significantly minimizes individual gage error and defines spectra of shock accurately enough to estimate some of the critical parameters and characteristics of shock. (Author).

Download or read book Shock Spectrum Measurements written by Frank W. Galbraith and published by . This book was released on 1965 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: A total of twelve reed gages were installed to measure displacement shock spectre resulting from Project Gnome underground nuclear explosion.

Download or read book The Shock and Vibration Bulletin written by and published by . This book was released on 1949 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Science and Engineering of Mechanical Shock written by Carl Sisemore and published by Springer. This book was released on 2019-05-08 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book fills a unique position in the literature as a dedicated mechanical shock analysis book. Because shock events can be extremely damaging, mechanical shock is an important topic for engineers to understand. This book provides the reader with the tools needed to quantitatively describe shock environments and their damage potential on aerospace, civil, naval and mechanical systems. The authors include the relevant history of how shock testing and analysis came to its current state and a discussion of the different types of shock environments typically experienced by systems. Development of single-degree-of-freedom theory and the theory of the shock response spectra are covered, consistent with treatment of shock spectra theory in the literature. What is unique is the expansion to other types of spectra including less common types of shock spectra and energy spectra methods using fundamental principles of structural dynamics. In addition, non-spectral methods are discussed with their applications. Non-spectral methods are almost completely absent from the current books on mechanical shock. Multi-degree-of-freedom shock spectra and multi-degree-of-freedom testing are discussed and the theory is developed. Addressing an emerging field for laboratory shock testing, the authors bring together information currently available only in journals and conference publications. The volume is ideal for engineers, structural designers, and structural materials fabricators needing a foundation to practically analyze shock environments and understand their role in structural design.

Download or read book Shock Spectrum Measurements written by M. V. Barton and published by . This book was released on 1962 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Twelve reed gages were installed for horizontal and vertical displacement shock spectrum measurements on the GNOME event. Seven of the 12 reed gages were placed on the earth's surface at various ranges from surface zero. Four of the gages were placed in the GNOME tunnel. One gage was placed in the International MineralsAND Chemical Corporation Mine (Shaft No. 4) approximately nine miles from the GNOME site. Usable data were obtained from nine of the 10 records recovered to date. The gage in the IMC mine recorded no displacements. Records from the gages in tunnel nearest zero were not recovered. (Author).

Download or read book Shock Spectrum Measurements written by Frank W. Galbraith and published by . This book was released on 1970 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ground shock spectrum measurements were made for the Prairie Flat 500-ton HE test and for the associated HEST test using mechanical reed gages. These tests were conducted at the Defence Research Establishment Suffield at Ralston, Alberta, Canada, and were sponsored by the Defense Atomic Support Agency. A total of 33 gages were used for the 500-ton test. Of these, 22 were in the free-field soil at ranges having overpressures of 840 (expected 1000), 600, and 300 psi and were oriented to measure vertical, horizontal-radial, and horizontal-transverse ground shock at the surface and at depths of 5 and 10 feet. The remaining 11 gages were in three model structures at overpressures of 600, 450, and 300 psi and were oriented vertically and horizontal-radially. The results of the 500-ton test indicated greater than expected ground shock. The model structures responded about as the free field at their mid-depths except for resonances peculiar to the structures themselves. The 500-ton free-field ground shock was somewhat greater than that from the HEST test especially in the horizontal direction. The spectra measured within the structures for the HEST and 500-ton tests were quite similar. (Author).

Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Shock and Vibration Handbook written by Cyril M. Harris and published by McGraw-Hill Companies. This book was released on 1976 with total page 1368 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 59th Shock and Vibration Symposium written by and published by . This book was released on 1988 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1971 with total page 2174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cities and Their Vital Systems written by Advisory Committee on Technology and Society and published by National Academies Press. This book was released on 1989 with total page 1298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cities and Their Vital Systems asks basic questions about the longevity, utility, and nature of urban infrastructures; analyzes how they grow, interact, and change; and asks how, when, and at what cost they should be replaced. Among the topics discussed are problems arising from increasing air travel and airport congestion; the adequacy of water supplies and waste treatment; the impact of new technologies on construction; urban real estate values; and the field of "telematics," the combination of computers and telecommunications that makes money machines and national newspapers possible.

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1974 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Publications of the National Bureau of Standards Catalog written by United States. National Bureau of Standards and published by . This book was released on 1987 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Publications of the National Institute of Standards and Technology Catalog written by National Institute of Standards and Technology (U.S.) and published by . This book was released on 1988 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Measurement System Phase Response on Shock Spectrum Computation written by P. L. Walter and published by . This book was released on 1983 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the standard methods for characterizing mechanical shock is by means of the shock spectrum. The principal application of the shock spectrum in aerospace technology is to permit component shock test specifications to be generated, independent of specific time histories. Inattention to the dynamics of the instrumentation system used to measure mechanical shock can result in distorted test data. Erroneous component test specifications will originate from shock spectra calculations based on these distorted data. This documents' premise is that measurement system design is frequently based upon amplitude response considerations with phase response ignored. In structural testing nonlinear phase response in measurement systems results in distorted transient data being recorded for analysis with resultant error in the computed shock spectra. Design guidelines are provided in this work to preclude these errors from occuring.

Download or read book Catalog of National Bureau of Standards Publications 1966 1976 Key word index written by United States. National Bureau of Standards. Technical Information and Publications Division and published by . This book was released on 1978 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt: