Download or read book Mechanical Impedance as a Tool in Biomechanics written by Edmund B. Weis and published by . This book was released on 1966 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report presents new measurements of mechanical impedance in the transient acceleration environment and compares the results with previous measurements made in the steady state sinusoidal acceleration environment. Although there are some discrepancies which await further clarification, the transfer function obtained under these two environments show encouraging general correlation. With further sophistication of the method, the transient impedance measurement shows considerable potential in that a single test furnishes data over a spectrum of frequencies and provides a more general excitation condition. Although it has only been recently employed for this purpose, the practical usefulness of the impedance method as a means of establishing design criteria for protection systems is most encouraging. With further definition of the mechanodynamic properties of the body of protection system components, it appears reasonable that biomechanics can achieve the goal of providing optimized protection against the increasingly severe mechanical environments generated in aerospace vehicles and ground transportation. (Author).

Download or read book Mechanical Impedance Analysis for Lumped Parameter Multi degree of Freedom multi dimensional Systems written by Frank J. On and published by . This book was released on 1967 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theoretical methods are presented for the analytic and experimental determination of mechanical impedance and its associated effects on the dynamic response of linear, multi-degree of freedom/multi-dimensional systems. Impedance matrices are formulated which are useful in describing and predicting the frequency dependent characteristic properties of these systems. The problem of interconnecting subsystems is formulated in terms of composite impedance matrices and interconnection equations, from which critical frequencies (resonances and anti-resonances) and dynamic response of the composite system may be obtained. Analytical and experimental procedures for the evaluation of these matrices are also discussed. To demonstrate the application of some of the procedures, an example problem is solved. Moreover, the results of this study are sufficiently general for extending the approach to many types of distributed system configurations subject to varied excitation phenomena.

Download or read book Colloquium on Mechanical Impedance Methods for Mechanical Vibrations written by American Society of Mechanical Engineers. Applied Mechanics Division. Shock and Vibration Committee and published by . This book was released on 1958 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book American Standard Nomenclature and Symbols for Specifying the Mechanical Impedance of Structures written by American Standards Association and published by . This book was released on 1964 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NEMA Handbook of Radio Standards written by National Electrical Manufacturers Association and published by . This book was released on 1928 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book MECHANICAL IMPEDANCE AND MOBILITY CONCEPTS written by G. J. O'Hara and published by . This book was released on 1966 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the report is to discuss fundamental concepts involved in mechanical impedance and mobility. The equations used in the formulation of the concepts are examined as to meaning and content. It is demonstrated for any prescribed structure that every possible observed mobility element is independent of the number and location of the other measurement points and that every possible observed mechanical impedance element is not. The effects upon the mobility and impedance arrays are examined for simple expansions and contractions of the tensor. Since mobility is not affected by changes in the number of observation points, remeasurement is not required at the observation points that are retained during expansion or contraction of the tensor; but since any changes in the observation points for impedance measurements requires changes in the blocking forces, the observation points that are retained are affected. An undamped lumped parameter system (a three-mass system on a rigid base and constrained to unidirectional motion) serves to illustrate the effects on the tensor elements of impedance or of mobility of the choice of the number and location of measurement points. (Author).

Download or read book Plant Roots written by Yoav Waisel and published by CRC Press. This book was released on 2002-03-29 with total page 1749 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third edition of a standard resource, this book offers a state-of-the-art, multi-disciplinary presentation of plant roots. It examines structure and development, assemblage of root systems, metabolism and growth, stressful environments, and interactions at the rhizosphere. Reflecting the explosion of advances and emerging technologies in the field, the book presents developments in the study of root origin, composition, formation, and behavior for the production of novel pharmaceutical and medicinal compounds, agrochemicals, dyes, flavors, and pesticides. It details breakthroughs in genetics, molecular biology, growth substance physiology, biotechnology, and biomechanics.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 1390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book IRE Directory written by and published by . This book was released on 1928 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bridge Maintenance Safety Management Resilience and Sustainability written by Fabio Biondini and published by CRC Press. This book was released on 2012-06-21 with total page 4119 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridge Maintenance, Safety, Management, Resilience and Sustainability contains the lectures and papers presented at The Sixth International Conference on Bridge Maintenance, Safety and Management (IABMAS 2012), held in Stresa, Lake Maggiore, Italy, 8-12 July, 2012. This volume consists of a book of extended abstracts (800 pp) Extensive collection of revised expert papers on recent advances in bridge maintenance, safety, management and life-cycle performance, representing a major contribution to the knowledge base of all areas of the field.

Download or read book NASA Technical Note written by United States. National Aeronautics and Space Administration and published by . This book was released on 1959 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transactions of the American Institute of Electrical Engineers written by and published by . This book was released on 1921 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report written by Institute of Radio Engineers. Standards Committee and published by . This book was released on 1926 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sound System Engineering written by Don Davis and published by Taylor & Francis. This book was released on 2013-06-26 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: Long considered the only book an audio engineer needs on their shelf, Sound System Engineering provides an accurate, complete and concise tool for all those involved in sound system engineering. Fully updated on the design, implementation and testing of sound reinforcement systems this great reference is a necessary addition to any audio engineering library. Packed with revised material, numerous illustrations and useful appendices, this is a concentrated capsule of knowledge and industry standard that runs the complete range of sound system design from the simplest all-analog paging systems to the largest multipurpose digital systems.

Download or read book Cartesian Impedance Control of Redundant and Flexible Joint Robots written by Christian Ott and published by Springer Science & Business Media. This book was released on 2008-07-22 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: By the dawn of the new millennium, robotics has undergone a major transf- mation in scope and dimensions. This expansion has been brought about by the maturity of the ?eld and the advances in its related technologies. From a largely dominant industrial focus, robotics has been rapidly expanding into the challenges of the human world. The new generation of robots is expected to safely and dependably co-habitat with humans in homes, workplaces, and c- munities, providing support in services, entertainment, education, healthcare, manufacturing, and assistance. Beyond its impact on physical robots, the body of knowledge robotics has produced is revealing a much wider rangeof applications reaching across diverse research areas and scienti?c disciplines, such as: biomechanics, haptics, n- rosciences, virtual simulation, animation, surgery, and sensor networks among others. In return, the challenges of the new emerging areas are proving an ab- dant source of stimulation and insights for the ?eld of robotics. It is indeed at the intersection of disciplines that the most striking advances happen. The goal of the series of Springer Tracts in Advanced Robotics (STAR) is to bring, in a timely fashion, the latest advances and developments in robotics on thebasisoftheirsigni?canceandquality.Itisourhopethatthewiderdissemi- tion of research developments will stimulate more exchanges and collaborations among the research community and contribute to further advancement of this rapidly growing ?eld.

Download or read book Passive Network Synthesis An Approach to Classification written by Alessandro Morelli and published by SIAM. This book was released on 2019-05-21 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: A resurgence of interest in network synthesis in the last decade, motivated in part by the introduction of the inerter, has led to the need for a better understanding of the most economical way to realize a given passive impedance. This monograph outlines the main contributions to the field of passive network synthesis and presents new research into the enumerative approach and the classification of networks of restricted complexity. Passive Network Synthesis: An Approach to Classification serves as both an ideal introduction to the topic and a definitive treatment of the Ladenheim catalogue. In particular, the authors provide a new analysis and classification of the Ladenheim catalogue, building on recent work, to obtain an improved understanding of the structure and realization power of the class within the biquadratic positive-real functions. This book is intended for researchers in systems and control, real algebraic geometry, electrical and mechanical networks, and dynamics and vibration.

Download or read book Smart Materials and Structures written by Peter L. Reece and published by Nova Publishers. This book was released on 2007 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Smart" materials respond to environmental stimuli with particular changes in some variables. For that reason they are often also called responsive materials. Depending on changes in some external conditions, "smart" materials change either their properties (mechanical, electrical, appearance), their structure or composition, or their functions. Mostly, "smart" materials are embedded in systems whose inherent properties can be favourably changed to meet performance needs. Smart materials and structures have widespread applications in: 1. Materials science: composites, ceramics, processing science, interface science, sensor/actuator materials, chiral materials, conducting and chiral polymers, electrochromic materials, liquid crystals, molecular-level smart materials, biomaterials. 2. Sensing and actuation: electromagnetic, acoustic, chemical and mechanical sensing and actuation, single-measurand sensors, multiplexed multimeasurand distributed sensors and actuators, sensor/actuator signal processing, compatibility of sensors and actuators with conventional and advanced materials, smart sensors for materials and composites processing. 3. Optics and electromagnetics: optical fibre technology, active and adaptive optical systems and components, tunable high-dielectric phase shifters, tunable surface control. 4. Structures: smart skins for drag and turbulence control, other applications in aerospace/hydrospace structures, civil infrastructures, transportation vehicles, manufacturing equipment, repairability and maintainability. 5. Control: structural acoustic control, distributed control, analogue and digital feedback control, real-time implementation, adaptive structure stability, damage implications for structural control. 6. Information processing: neural networks, data processing, data visualisation and reliability. This book presents leading new research from around the globe in this field.