Datei:MetalFatigue 001.jpg

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Beschreibung

The two newly-developed automatic stopping devices installed on a fatigue-testing machine at the National Bureau of Standards. (Note: the motor in the foreground is not part of the set-up.) The metal specimen under test is held in place between the two bearing boxes (right). The bearing boxes are supported at the ends away from the specimen and weighted at the ends near the specimen, so that the weighted ends tend to sag more when a crack begins to form in the specimen. If the crack is on only one side of the specimen, vibration as well as sagging will result. The deflection-responsive stopping device consists of the microswitch (center) actuated by the lever rigidly fastened to the right-hand bearing box. The vibration-responsive device (just behind and to the right of the specimen) consists of a steel ball poised on a pedestal; when vibration shakes the ball from the pedestal, it closes a circuit. Both devices are used simultaneously at NBS with their circuits in parallel; either may be actuated first, depending on the nature of the incipient crack.

Quelle

National Institute of Standards and Technology

Urheber

National Institute of Standards and Technology

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(Weiternutzung dieser Datei)

This image is in the public domain in the United States because it is a work of the United States Federal Government, specifically an employee of the National Institute of Standards and Technology, under the terms of Title 17, Chapter 1, Section 105 of the US Code.

Warning: this does not include Standard Reference Data, as per Standard Reference Data Act (P.L. 90-396; 15 U.S.C. 290-290f) which may be copyrighted by the NIST.

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Lizenz

This image is in the public domain in the United States because it is a work of the United States Federal Government, specifically an employee of the National Institute of Standards and Technology, under the terms of Title 17, Chapter 1, Section 105 of the US Code.

Warning: this does not include Standard Reference Data, as per Standard Reference Data Act (P.L. 90-396; 15 U.S.C. 290-290f) which may be copyrighted by the NIST.

العربية ∙ English ∙ 日本語 ∙ македонски ∙ Nederlands ∙ +/−

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	Version vom	Vorschaubild	Maße	Benutzer	Kommentar
aktuell	21:02, 6. Mär. 2014		5.813 × 4.734 (1,13 MB)	wikimediacommons>NISTResearchLibrary

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Werkstofflabor und Prüfdatenauswertung – Ermüdungsprüfungen im Grundprinzip erklären

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Bildtitel	The two newly-developed automatic stopping devices installed on a fatigue-testing machine at the National Bureau of Standards. (Note: the motor in the foreground is not part of the set-up.) The metal specimen under test is held in place between the two bearing boxes (right). The bearing boxes are supported at the ends away from the specimen and weighted at the ends near the specimen, so that the weighted ends tend to sag more when a crack begins to form in the specimen. If the crack is on only one side of the specimen, vibration as well as sagging will result. The deflection-responsive stopping device consists of the microswitch (center) actuated by the lever rigidly fastened to the right-hand bearing box. The vibration-responsive device (just behind and to the right of the specimen) consists of a steel ball poised on a pedestal; when vibration shakes the ball from the pedestal, it closes a circuit. Both devices are used simultaneously at NBS with their circuits in parallel; either may be actuated first, depending on the nature of the incipient crack.
Fotograf	National Institute of Standards and Technology
Urheberrechte	The images in the Metal Fatigue Photographic Collection are in the public domain and are not subject to copyright in the United States. However, please pay special attention to the individual works to make sure there are no copyright restrictions indicated. Individual works may require securing other permissions from the original copyright holder. Use of the images from NIST Digital Collections is not restricted, but a statement of attribution is required. Please use the following attribution statement: "National Institute of Standards and Technology Digital Collections, Gaithersburg, MD 20899."
Quelle	Metal Fatigue Photographic Collection
Titel	National Institute of Standards and Technology
Kurztitel	Automatic stopping devices on a fatigue-testing machine
Breite	5.813 px
Höhe	4.734 px
Bits pro Farbkomponente	16 16 16
Art der Kompression	Unkomprimiert
Pixelzusammensetzung	RGB
Kameraausrichtung	Normal
Anzahl Komponenten	3
Horizontale Auflösung	600 dpi
Vertikale Auflösung	600 dpi
Datenausrichtung	Grobformat
Software	Adobe Photoshop CS5 Windows
Speicherzeitpunkt	16:03, 12. Feb. 2013
Exif-Version	2.21
Farbraum	Nicht kalibriert
Bildbreite	5.813 px
Bildhöhe	4.734 px
Code des Standorts, von dem das Foto übermittelt wurde	510075
Datum, zu dem die Metadaten letztmalig geändert wurden	11:21, 12. Feb. 2013
Digitalisierungszeitpunkt	02:38, 29. Jan. 2013
Urheberrechtsstatus	Urheberrechtsstatus nicht festgelegt
Eindeutige Kennung des ursprünglichen Dokuments	xmp.did:933A136B5675E21197A3CF50644ABE3E
Stichwörter	Metals--Fatigue--Photograph collections.
Kontaktinformationen	library@nist.gov 100 Bureau Dr, MS 2500 Gaithersburg, MD, 20899 301-975-3052
IIM-Version	2

Datei:MetalFatigue 001.jpg

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