Influence of Strain Gage Position on the Static and Dynamic Performance of Instrumented Impact Strikers

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Influence of Strain Gage Position on the Static and Dynamic Performance of Instrumented Impact Strikers. / Schuurmans, Johan; Scibetta, Marc; Lucon, Enrico; Puzzolante, Luigi.

In: Journal of Testing and Evaluation, Vol. 37, No. 2, 12.2008, p. 1-7.

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@article{43935e403c8c4ed4897054f106f3a37d,
title = "Influence of Strain Gage Position on the Static and Dynamic Performance of Instrumented Impact Strikers",
abstract = "The quality and reliability of impact forces obtained from instrumented Charpy tests have been investigated considerably at SCK•CEN since the 1990{\textquoteright}s, in parallel to the development/qualification of advanced methodologies for the surveillance of nuclear reactor pressure vessels. In this framework, careful analysis of the instrumented force/deflection traces from Charpy tests allows the defining of important material parameters. While first efforts at SCK•CEN were concentrated on the optimization of the striker calibration procedure, more recently the focus has been on the in-house development of reliable instrumented strikers with 2 mm (ISO 148) and 8 mm radius (ASTM E23). Evidence was found that the position of the strain gages affects the static and dynamic performance of the strikers. Additional investigations have shown that the linearity of the strikers during static calibration improves as the gages are placed further away from the striking edge. For the ASTM design, moving the strain gages away also reduces the characteristic “tail” that is typically observed just before a ductile specimen is ejected from the anvils. Our research shows that the best striker performance is achieved when the center of the T-rosette is located at about 16 mm from the striking edge, using a top/bottom configuration.",
keywords = "instrumented Charpy tests, instrumented Charpy striker, static calibration, dynamic performance, strain gage position",
author = "Johan Schuurmans and Marc Scibetta and Enrico Lucon and Luigi Puzzolante",
note = "Score = 10",
year = "2008",
month = dec,
doi = "10.1520/JTE101929",
language = "English",
volume = "37",
pages = "1--7",
journal = "Journal of Testing and Evaluation",
issn = "0090-3973",
publisher = "ASTM International",
number = "2",

}

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TY - JOUR

T1 - Influence of Strain Gage Position on the Static and Dynamic Performance of Instrumented Impact Strikers

AU - Schuurmans, Johan

AU - Scibetta, Marc

AU - Lucon, Enrico

AU - Puzzolante, Luigi

N1 - Score = 10

PY - 2008/12

Y1 - 2008/12

N2 - The quality and reliability of impact forces obtained from instrumented Charpy tests have been investigated considerably at SCK•CEN since the 1990’s, in parallel to the development/qualification of advanced methodologies for the surveillance of nuclear reactor pressure vessels. In this framework, careful analysis of the instrumented force/deflection traces from Charpy tests allows the defining of important material parameters. While first efforts at SCK•CEN were concentrated on the optimization of the striker calibration procedure, more recently the focus has been on the in-house development of reliable instrumented strikers with 2 mm (ISO 148) and 8 mm radius (ASTM E23). Evidence was found that the position of the strain gages affects the static and dynamic performance of the strikers. Additional investigations have shown that the linearity of the strikers during static calibration improves as the gages are placed further away from the striking edge. For the ASTM design, moving the strain gages away also reduces the characteristic “tail” that is typically observed just before a ductile specimen is ejected from the anvils. Our research shows that the best striker performance is achieved when the center of the T-rosette is located at about 16 mm from the striking edge, using a top/bottom configuration.

AB - The quality and reliability of impact forces obtained from instrumented Charpy tests have been investigated considerably at SCK•CEN since the 1990’s, in parallel to the development/qualification of advanced methodologies for the surveillance of nuclear reactor pressure vessels. In this framework, careful analysis of the instrumented force/deflection traces from Charpy tests allows the defining of important material parameters. While first efforts at SCK•CEN were concentrated on the optimization of the striker calibration procedure, more recently the focus has been on the in-house development of reliable instrumented strikers with 2 mm (ISO 148) and 8 mm radius (ASTM E23). Evidence was found that the position of the strain gages affects the static and dynamic performance of the strikers. Additional investigations have shown that the linearity of the strikers during static calibration improves as the gages are placed further away from the striking edge. For the ASTM design, moving the strain gages away also reduces the characteristic “tail” that is typically observed just before a ductile specimen is ejected from the anvils. Our research shows that the best striker performance is achieved when the center of the T-rosette is located at about 16 mm from the striking edge, using a top/bottom configuration.

KW - instrumented Charpy tests

KW - instrumented Charpy striker

KW - static calibration

KW - dynamic performance

KW - strain gage position

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_93150

UR - http://knowledgecentre.sckcen.be/so2/bibref/5394

U2 - 10.1520/JTE101929

DO - 10.1520/JTE101929

M3 - Article

VL - 37

SP - 1

EP - 7

JO - Journal of Testing and Evaluation

JF - Journal of Testing and Evaluation

SN - 0090-3973

IS - 2

ER -

ID: 234208