Influence of Loading Rate on the Calibration of Instrumented Charpy Strikers

Research output: Contribution to journalArticle

Standard

Influence of Loading Rate on the Calibration of Instrumented Charpy Strikers. / Lucon, Enrico; Scibetta, Marc; McColskey, J. David; McCowan, Chris N.

In: Journal of Testing and Evaluation, Vol. 37, No. 6, 11.2009, p. 520-530.

Research output: Contribution to journalArticle

Harvard

Lucon, E, Scibetta, M, McColskey, JD & McCowan, CN 2009, 'Influence of Loading Rate on the Calibration of Instrumented Charpy Strikers', Journal of Testing and Evaluation, vol. 37, no. 6, pp. 520-530. https://doi.org/10.1520/JTE102330

APA

Lucon, E., Scibetta, M., McColskey, J. D., & McCowan, C. N. (2009). Influence of Loading Rate on the Calibration of Instrumented Charpy Strikers. Journal of Testing and Evaluation, 37(6), 520-530. https://doi.org/10.1520/JTE102330

Vancouver

Lucon E, Scibetta M, McColskey JD, McCowan CN. Influence of Loading Rate on the Calibration of Instrumented Charpy Strikers. Journal of Testing and Evaluation. 2009 Nov;37(6):520-530. https://doi.org/10.1520/JTE102330

Author

Lucon, Enrico ; Scibetta, Marc ; McColskey, J. David ; McCowan, Chris N. / Influence of Loading Rate on the Calibration of Instrumented Charpy Strikers. In: Journal of Testing and Evaluation. 2009 ; Vol. 37, No. 6. pp. 520-530.

Bibtex - Download

@article{1ac68185ebb643b9ac6aa3282bbef53c,
title = "Influence of Loading Rate on the Calibration of Instrumented Charpy Strikers",
abstract = "One of the key factors for obtaining reliable instrumented Charpy results is the calibration of the instrumented striker. The conventional approach for establishing an analytical relationship between strain gage output and force applied to the transducer is the static calibration, which is preferably performed with the striker installed in the pendulum assembly. However, the response of an instrumented striker under static force application may sometimes differ significantly from its dynamic performance during an actual Charpy test. This is typically reflected in a large difference between absorbed energy returned by the pendulum encoder (KV) and calculated under the instrumented force/displacement test record (Wt). Such difference can be either minimized by optimizing the striker design or analytically removed by adjusting forces and displacements until KV=Wt (the so-called “dynamic force adjustment”). This study investigates the influence of increasing force application rates on the force/voltage characteristics of two instrumented strikers, one at NIST in Boulder, Colorado and one at SCK•CEN in Mol, Belgium. Force was applied to the strikers using servohydraulic testing machines up to maximum loading rates of around 3,000 kN/s, approximately 60 times lower than the typical loading rate during the elastic portion of an instrumented Charpy test (180,000 kN/s).",
keywords = "instrumented Charpy tests, instrumented Charpy striker, static calibration, dynamic force adjustment, force application rate",
author = "Enrico Lucon and Marc Scibetta and McColskey, {J. David} and McCowan, {Chris N.}",
note = "Score = 10",
year = "2009",
month = "11",
doi = "10.1520/JTE102330",
language = "English",
volume = "37",
pages = "520--530",
journal = "Journal of Testing and Evaluation",
issn = "0090-3973",
publisher = "ASTM International",
number = "6",

}

RIS - Download

TY - JOUR

T1 - Influence of Loading Rate on the Calibration of Instrumented Charpy Strikers

AU - Lucon, Enrico

AU - Scibetta, Marc

AU - McColskey, J. David

AU - McCowan, Chris N.

N1 - Score = 10

PY - 2009/11

Y1 - 2009/11

N2 - One of the key factors for obtaining reliable instrumented Charpy results is the calibration of the instrumented striker. The conventional approach for establishing an analytical relationship between strain gage output and force applied to the transducer is the static calibration, which is preferably performed with the striker installed in the pendulum assembly. However, the response of an instrumented striker under static force application may sometimes differ significantly from its dynamic performance during an actual Charpy test. This is typically reflected in a large difference between absorbed energy returned by the pendulum encoder (KV) and calculated under the instrumented force/displacement test record (Wt). Such difference can be either minimized by optimizing the striker design or analytically removed by adjusting forces and displacements until KV=Wt (the so-called “dynamic force adjustment”). This study investigates the influence of increasing force application rates on the force/voltage characteristics of two instrumented strikers, one at NIST in Boulder, Colorado and one at SCK•CEN in Mol, Belgium. Force was applied to the strikers using servohydraulic testing machines up to maximum loading rates of around 3,000 kN/s, approximately 60 times lower than the typical loading rate during the elastic portion of an instrumented Charpy test (180,000 kN/s).

AB - One of the key factors for obtaining reliable instrumented Charpy results is the calibration of the instrumented striker. The conventional approach for establishing an analytical relationship between strain gage output and force applied to the transducer is the static calibration, which is preferably performed with the striker installed in the pendulum assembly. However, the response of an instrumented striker under static force application may sometimes differ significantly from its dynamic performance during an actual Charpy test. This is typically reflected in a large difference between absorbed energy returned by the pendulum encoder (KV) and calculated under the instrumented force/displacement test record (Wt). Such difference can be either minimized by optimizing the striker design or analytically removed by adjusting forces and displacements until KV=Wt (the so-called “dynamic force adjustment”). This study investigates the influence of increasing force application rates on the force/voltage characteristics of two instrumented strikers, one at NIST in Boulder, Colorado and one at SCK•CEN in Mol, Belgium. Force was applied to the strikers using servohydraulic testing machines up to maximum loading rates of around 3,000 kN/s, approximately 60 times lower than the typical loading rate during the elastic portion of an instrumented Charpy test (180,000 kN/s).

KW - instrumented Charpy tests

KW - instrumented Charpy striker

KW - static calibration

KW - dynamic force adjustment

KW - force application rate

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_103075

UR - http://knowledgecentre.sckcen.be/so2/bibref/6603

U2 - 10.1520/JTE102330

DO - 10.1520/JTE102330

M3 - Article

VL - 37

SP - 520

EP - 530

JO - Journal of Testing and Evaluation

JF - Journal of Testing and Evaluation

SN - 0090-3973

IS - 6

ER -

ID: 348288