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Test Practices.
- Format:
- Book
- Series:
- Journal of ASTM International. Manual Series ; MNL10616M.
- ASTM manual series ; MNL10616M
- Language:
- English
- Subjects (All):
- Structural analysis (Engineering)--Handbooks, manuals, etc.
- Structural analysis (Engineering).
- Fracture mechanics--Handbooks, manuals, etc.
- Fracture mechanics.
- Fractures--Handbooks, manuals, etc.
- Fractures.
- Physical Description:
- 1 online resource (2 pages) : illustrations, figures, tables.
- Volume 2005, Issue 52 (January 2005)
- Other Title:
- ASTM digital library.
- Place of Publication:
- West Conshohocken, Pa. : ASTM International, 2005.
- System Details:
- Mode of access: World Wide Web.
- text file PDF
- Summary:
- THE KJC TOUGHNESS LIMIT VALUE, KJC (LIMIT), GIVEN BY EQ 12, WILL almost always occur near the point of maximum load in the test record. To avoid specimen failure due to excessive system crack drive at maximum load and beyond, the applied load must decrease equally with the decrease in load bearing capacity of the test specimen. Hence, the test machine must be operated under rigid displacement control. Servo-hydraulic machines can be displacement controlled, using the feedback voltage of a clip gage attached across either the crack mouth or the load-line of a specimen. An alternative is to use the machine actuator voltage feedback for stroke control. The former approach provides infinitely stiff control, and the latter will contain the slightly softer spring-like compliance of the pull rods and clevises. Screw-driven test machines usually have stiff frames and cross-heads, so they perform the same as a servo-hydraulic machine under stroke control. All of the above approaches have been proven to work successfully, provided that the pull rods are of suitable stiffness.
- Notes:
- "ASTM Stock Number: MNL10616M".
- Includes bibliographical references.
- Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 2005. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
- Description based on publisher's website, viewed May 03, 2017.
- ISBN:
- 9780803145597 (e-ISBN)
- 9780803133686
- 0803133685
- Access Restriction:
- Restricted for use by site license.
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