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Dynamic Environments Testing, Volume 7: Proceedings of the 41st IMAC, A Conference and Exposition on Structural Dynamics, 2023, the seventh volume of ten from the Conference brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects Dynamic Environments Testing including papers on:Vibration Testing Shock TestingMulti-Axis Shaker Testing Test Fixture Design Dynamic Environment Definition Specifications for Acceptance Testing

Computer Vision & Laser Vibrometry, Volume 6: Proceedings of the 41st IMAC, A Conference and Exposition on Structural Dynamics, 2023, the sixth volume of ten from the Conference brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects of Computer Vision, Laser Vibrometry and Structural Health Monitoring, including papers on:Novel TechniquesOptical Methods,Scanning LDV MethodsPhotogrammetry & DICStructural Health Monitoring

Haben Sie sich schon einmal gefragt, warum das Loch in Ihrem Donut genau diesen Durchmesser hat? Oder warum ein Wasserglas in der Gaststätte keinen Füllstrich benötigt?Möchten Sie Ihr Herzblatt mit etwas Größerem als einer Magnum Flasche Sekt überraschen?Und erst recht - warum passt trotz richtiger Größenangabe in Inches Bekleidung aus China eigentlich nie?Möchten Sie Ihre Freunde mit dem Wissen beeindrucken, dass Wasser flüssig, fest und gasförmig sein kann - und zwar gleichzeitig?Diese und viele weitere Fragen beantwortet dieses Buch mit einem Augenzwinkern - Fun und Facts um Themen der Messtechnik.Versprochen: viele Dinge werden Sie im Alltag wiederentdecken!

This book includes the description, modeling and realization of new optical metrology techniques for technical diagnostics of materials. Special attention is paid to multi-step phase shifting interferometry with arbitrary phase shifts between interferograms, phase shifting and correlation digital speckle pattern interferometry, optical-digital speckle correlation, and digital image correlation, as well as dynamic speckle patterns analysis.Optoacoustic techniques can be treated as a separate branch of optical metrology and can solve many problems of technical diagnostics, including detection and localization of subsurface defects in laminated composite materials. The utility of such techniques can be increased by illumination of the object via acoustic waves at certain frequencies. Hence, an effective theoretical approach to the modeling of an elastic wave field interaction with an interphase defect, and to defect visualization using dynamic speckle patterns, is also includedin this book. The experimental proof of the proposed approaches was achieved using a specially created hybrid optical-digital system for detection of different subsurface defects.This book is intended for engineers, researchers and students engaged in the field of nondestructive evaluation of materials and technical diagnostics of structural elements, hybrid optical systems, speckle metrology and optoacoustic imaging techniques.

This book is intended to provide concentrated information on the subject of torque wrenches. Torque wrenches have undergone a rapid development from simple tools to precise measuring tools. This is due to advanced mechanization, ever-improving manufacturing methods and optimization processes. While it was still possible to repair a motor vehicle with a set of wrenches in the 1970s, such an "intervention" today would be a blatant safety risk and probably also the technical end of an engine, for example. Torque wrenches have also become indispensable in the medical field. Dental implants, for example, are precisely placed and fastened with the smallest torques.Unfortunately, it can be observed that the landscape of standards and regulations - thought out and developed by experts - is often not, or only slightly, transported to the people who are supposed to implement the normative specifications. This book is intended as an introduction to the subject of torque wrenches, providing the user with basic knowledge and serving as a reference work and list of references and a usefull helper for torque wrench calibration issues.

"Sharp and engaging, A Brief History of Timekeeping is a story not just about the science of sundials, sandglasses, and mechanical clocks, but also the politics of calendars and time zones, the philosophy of measurement, and the nature of space and time itself"--

Messen Was ist Messen? Beispiel ((als "running example" durch das Buch)) Unvollkommenheit von Messungen, unvollständige Kenntnisse über Größen und Parameter Messsystem und Modell des Messens Messgröße, Einflussgrößen, Messsignal Messsysteme Messverfahren, Messprinzipe, Messmethoden Funktionale Einheiten und Modelle (Ursache-Wirkungs-Modelle, Modellstrukturen) Messen als inverses Problem Modell der (Auswertung der) Messung Systematische Modellbildung für die MU-Analyse (schrittweises Vorgehen) Unvollkommenheit der Kenntnisse beim Messen Ziel: Ermittlung bester Schätzwert und Messunsicherheit (als Güteparameter) Vorhandene und begrenzte Kenntnisse Messgeräte, Datenblätter Diskretisierung von Messsignalen, digitale Anzeige, digitale Messwertver- arbeitung Wiederholte Beobachtungen (Messreihen, Stichprobenanalyse) Temperatur- und andere Parameteränderungen Messung und Kalibrierung ---------------------------------- Behandlung von Messunsicherheiten Probabilistischer Ansatz Wiederholte Beobachtungen Sonstige Kenntnisse Ermittlung des besten Schätzwerts Ermittlung der Messunsicherheit Unsicherheitsfortpflanzung (Addition der Varianzen) Messunsicherheitsbeiträge und deren Wichtung (Empfindlichkeitskoeffizienten) Korrelierte Größen Gesamtmessunsicherheit Messunsicherheitsbudget Erweiterte Messunsicherheit Systematisches Vorgehen nach GUM: 6 Schritte Beispiele (DVM, Kalibration Thermometer, Einzelthermometer, Taupunktspiegel (NL Modell)) Rechnergestützte Messunsicherheitsbestimmung ((GUM-Workbench)) Numerische Messunsicherheitsbestimmung (Monte-Carlo-Verfahren nach GUM-Supplement) Ermittlung der Messunsicherheit aus Ringversuchen und Eignungstests Multivariate Ergebnisgrößen, z. B. komplexe Messgrößen Darstellung: Jeweils: - linke Seite: allgemeines, Theorie - rechte Seite: konkret am Beispiel

Thermografie ist eine spannende und sehr interessante Technik, die in den letzten Jahren quasi für jeden interessierten nutzbar wurde.Lernen Sie anhand kleiner praktischer Beispiele die wichtigsten Grundlagen und Zusammenhänge kennen, um Thermografie bestmöglich zu nutzen!Begleiten Sie mich auf einer spannenden Reise und lernen Sie das beste aus Ihrer Wärmebildkamera herauszuholen und Wärmebilder richtig zu interpretieren.

Measurement uncertainty is an important component of modern materials analysis: it indicates the boundaries within which the test results can be trusted. Such results are necessary for understanding of, for example, material and product tolerances and lifetimes, vital for plastic product reliability and safety.Determination of measurement uncertainty is normally quite laborious, but this book shows how the available interlaboratory test data for plastics can be used to calculate measurement uncertainty much more simply. It contains many interlaboratory test results in the fields of thermoanalysis, molar mass determination, and quantitative analysis of the composition of material, presented in tables and graphical charts, discussed in the text, and elaborated by practical examples.In addition to the evaluation by means of the presented data (top-down approach), the relationship to the bottom-up approach specified in the Guide to the Expression of Uncertainty in Measurement (GUM) is explained based on an example. Further sections deal with sampling, and the issue of whether or not the difference between analytical results is significant.

This handbook comprehensively covers the cutting-edge trends and techniques essential for the integration of nondestructive evaluation (NDE) into the changing face of the modern industrial landscape. In particular, it delves into the marriage of NDE with new techniques in e.g. data mining, cloud computing and autonomous operation, highlighting the potential for cyber-physical controlled production and discussing the myriad possible applications across many different industries.The Handbook of NDE 4.0 centers around the Internet of Things and Industry 4.0 ¿ the next generation of industrial production encompassing all aspects of networking across all industrial areas. It discusses the adaptation of existing NDE techniques to emerging new technological areas, such as 3D printing, via the introduction of cyber systems into the inspection and maintenance processes. In addition, the handbook covers topics such as the management and processing of big data with respect to real-time monitoring of structural integrity and reliable inspection of individual components. Remote NDE to include competence not available on-site will be a potential technique to increase reliability of NDE inspections by integrating additional specialist inputs into the decision process by methods such as telepresence, thereby better leveraging the scarce resources of senior inspectors into industrial inspections at multiple sites.The handbook houses a wealth of essential information to help academics, industry professionals and entrepreneurs navigate through this burgeoning new field. The material in this handbook is presented with the intention of ultimately improving human safety through reliable inspections and dependable maintenance of critical infrastructure, while also enhancing business value through reduced downtime, affordable maintenance, and talent optimization.

Måleteknik er et opslagsværk til brug i industrien og til undervisningen på mellemlange og videregående uddannelser. Bogen dykker ned i metrologi og statistik og behandler blandt andet geometriske produktspecifikationer, udførelse af målinger samt analyse af målesystemer og måledata. Desuden gennemgår den statistisk processtyring (SPC) og stikprøveplaner efter de nyeste ISO-standarder. Endelig behandles måleinstrumenter til mekaniske, elektriske og kemiske målinger samt måling af flow og masse udførligt, ligesom koordinatmålemaskinen (CMM) beskrives.Tilegnelsen af det teoretiske stof understøttes af eksempler på måletekniske beregninger.Dette er bind 2 af Kvalitetsstyring og Måleteknik. Bøgerne er skrevet af Valter Loll og Jørgen Meinertz.