Application of the Bi-modal Master Curve Procedure to Determine the Fracture Toughness Lower Bound Curve

Rachid Chaouadi; Stéphane Marie; Marlies Lambrecht; Cecile Miller; Philippe Fichot

Application of the Bi-modal Master Curve Procedure to Determine the Fracture Toughness Lower Bound Curve

Rachid Chaouadi, Stéphane Marie, Marlies Lambrecht, Cecile Miller, Philippe Fichot

Research output › peer-review

Abstract

The lower bound fracture toughness curve plays a key role in assessing the safety integrity of nu-clear components, in particular the reactor pressure vessel. The construction codes such as ASME or RCC-M rely on a procedure based on the Pellini drop weight and Charpy impact tests to determine the so-called RTNDT, the reference temperature of nil-ductility transition. The latter determines the lower bound fracture toughness that is used for further structural integrity calculations. Nowadays, an alternative is available to directly measure the fracture toughness thanks to the master curve concept. The main objective of the present paper is to compare this innovative approach to the RTNDT-based method in particular for inhomogeneous materials.

Original language	English
Title of host publication	Contribution of Materials Investigations and Operating Experience to Light Water NPPs’ Safety, Performance and Reliability
Subtitle of host publication	Fontevraud 9
Publisher	Sfen - Société française d’énergie nucléaire
Number of pages	10
State	Published - 16 Sep 2018
Event	2018 - FONTEVRAUD 9: Contribution of Materials Investigations and Operating Experience to Light Water NPPs’ Safety, Performance and Reliability - Palais des Papes, Avignon Duration: 17 Sep 2018 → 20 Sep 2018 http://www.sfen-fontevraud9.org/

Conference

Conference	2018 - FONTEVRAUD 9
Country/Territory	France
City	Avignon
Period	2018-09-17 → 2018-09-20
Internet address	http://www.sfen-fontevraud9.org/

Cite this

Chaouadi, R., Marie, S., Lambrecht, M., Miller, C., & Fichot, P. (2018). Application of the Bi-modal Master Curve Procedure to Determine the Fracture Toughness Lower Bound Curve. In Contribution of Materials Investigations and Operating Experience to Light Water NPPs’ Safety, Performance and Reliability: Fontevraud 9 Article 000107 Sfen - Société française d’énergie nucléaire.

Chaouadi, Rachid ; Marie, Stéphane ; Lambrecht, Marlies et al. / Application of the Bi-modal Master Curve Procedure to Determine the Fracture Toughness Lower Bound Curve. Contribution of Materials Investigations and Operating Experience to Light Water NPPs’ Safety, Performance and Reliability: Fontevraud 9 . Sfen - Société française d’énergie nucléaire, 2018.

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abstract = "The lower bound fracture toughness curve plays a key role in assessing the safety integrity of nu-clear components, in particular the reactor pressure vessel. The construction codes such as ASME or RCC-M rely on a procedure based on the Pellini drop weight and Charpy impact tests to determine the so-called RTNDT, the reference temperature of nil-ductility transition. The latter determines the lower bound fracture toughness that is used for further structural integrity calculations. Nowadays, an alternative is available to directly measure the fracture toughness thanks to the master curve concept. The main objective of the present paper is to compare this innovative approach to the RTNDT-based method in particular for inhomogeneous materials.",

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Chaouadi, R, Marie, S, Lambrecht, M, Miller, C & Fichot, P 2018, Application of the Bi-modal Master Curve Procedure to Determine the Fracture Toughness Lower Bound Curve. in Contribution of Materials Investigations and Operating Experience to Light Water NPPs’ Safety, Performance and Reliability: Fontevraud 9 ., 000107, Sfen - Société française d’énergie nucléaire, 2018 - FONTEVRAUD 9, Avignon , France, 2018-09-17.

Application of the Bi-modal Master Curve Procedure to Determine the Fracture Toughness Lower Bound Curve. / Chaouadi, Rachid; Marie, Stéphane; Lambrecht, Marlies et al.
Contribution of Materials Investigations and Operating Experience to Light Water NPPs’ Safety, Performance and Reliability: Fontevraud 9 . Sfen - Société française d’énergie nucléaire, 2018. 000107.

Research output › peer-review

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AB - The lower bound fracture toughness curve plays a key role in assessing the safety integrity of nu-clear components, in particular the reactor pressure vessel. The construction codes such as ASME or RCC-M rely on a procedure based on the Pellini drop weight and Charpy impact tests to determine the so-called RTNDT, the reference temperature of nil-ductility transition. The latter determines the lower bound fracture toughness that is used for further structural integrity calculations. Nowadays, an alternative is available to directly measure the fracture toughness thanks to the master curve concept. The main objective of the present paper is to compare this innovative approach to the RTNDT-based method in particular for inhomogeneous materials.

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