Ultrasonic studies on iter divertor and first wall prototype modules

Jorma Pitkänen, Pentti Kauppinen, Harri Jeskanen, Seppo Tähtinen, Stefan Sandlin

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Abstract

Blanket and divertor components of ITER are complicated in design and reliable reactor operation sets special requirements on applied manufacturing methods and on quality and integrity assessment methods. R&D programmes have been implemented to develop suitable nondestructive testing method as a part of ITER Primary First Wall and Divertor component manufacturing programmes. The suitability of several nondestructive testing methods have been evaluated i.e. ultrasonic inspection, eddy current, X-ray, infrared thermography and leak testing during different manufacturing stages as a quality assurance method and after thermal fatigue tests as an integrity assessment method. In this study ultrasonic methods have been applied to evaluate structural integrity of several ITER Primary First Wall and Divertor Vertical Target mock-ups before and after thermal fatigue and high heat flux tests. The techniques used were leaky Rayleigh wave and longitudinal wave reflection techniques. The applicability of ultrasonic methods was evaluated by using small scale mock-ups with artificial manufacturing defects on different interfaces. In addition to outer surfaces of the mock-ups several dissimilar metal planar and tubular interfaces have been examined i.e. Be and Cu surfaces and Be/Cu, Cu/Cu, Cu/Stain-less steel, W/Cu and CfC/Cu interfaces. The ultrasonic examinations were carried out before and after cyclic thermal loading for ITER Primary First Wall mock-ups up to 4 MWm-2 and for ITER Divertor Vertical Target mock-up up to 15 MWm-2. The leaky Rayleigh wave technique was used to detect surface defects and interface defects in different joints. The longitudinal wave reflection was used only for interface defects. New probes were designed for inspection tasks. The NDT methods are compared briefly in this paper as well as the accuracy of detecting defects with ultrasonic testing methods.
Original languageEnglish
Title of host publication22nd Symposium on Fusion Technology
Subtitle of host publicationBook of Abstracts
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Pages78-78
ISBN (Electronic)951-38-5731-X
ISBN (Print)951-38-5730-1
Publication statusPublished - 2002
Event22nd Symposium on Fusion Technology - Helsinki, Finland
Duration: 9 Sep 200213 Sep 2002
Conference number: 22

Publication series

SeriesVTT Symposium
Number220
ISSN0357-9387

Conference

Conference22nd Symposium on Fusion Technology
Abbreviated titleSOFTA
CountryFinland
CityHelsinki
Period9/09/0213/09/02

Fingerprint

modules
ultrasonics
prototypes
manufacturing
integrity
thermal fatigue
wave reflection
longitudinal waves
defects
Rayleigh waves
inspection
fatigue tests
blankets
assurance
surface defects
eddy currents
heat flux
examination
reactors
steels

Cite this

Pitkänen, J., Kauppinen, P., Jeskanen, H., Tähtinen, S., & Sandlin, S. (2002). Ultrasonic studies on iter divertor and first wall prototype modules. In 22nd Symposium on Fusion Technology: Book of Abstracts (pp. 78-78). [B-36] Espoo: VTT Technical Research Centre of Finland. VTT Symposium, No. 220
Pitkänen, Jorma ; Kauppinen, Pentti ; Jeskanen, Harri ; Tähtinen, Seppo ; Sandlin, Stefan. / Ultrasonic studies on iter divertor and first wall prototype modules. 22nd Symposium on Fusion Technology: Book of Abstracts. Espoo : VTT Technical Research Centre of Finland, 2002. pp. 78-78 (VTT Symposium; No. 220).
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Pitkänen, J, Kauppinen, P, Jeskanen, H, Tähtinen, S & Sandlin, S 2002, Ultrasonic studies on iter divertor and first wall prototype modules. in 22nd Symposium on Fusion Technology: Book of Abstracts., B-36, VTT Technical Research Centre of Finland, Espoo, VTT Symposium, no. 220, pp. 78-78, 22nd Symposium on Fusion Technology, Helsinki, Finland, 9/09/02.

Ultrasonic studies on iter divertor and first wall prototype modules. / Pitkänen, Jorma; Kauppinen, Pentti; Jeskanen, Harri; Tähtinen, Seppo; Sandlin, Stefan.

22nd Symposium on Fusion Technology: Book of Abstracts. Espoo : VTT Technical Research Centre of Finland, 2002. p. 78-78 B-36 (VTT Symposium; No. 220).

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

TY - CHAP

T1 - Ultrasonic studies on iter divertor and first wall prototype modules

AU - Pitkänen, Jorma

AU - Kauppinen, Pentti

AU - Jeskanen, Harri

AU - Tähtinen, Seppo

AU - Sandlin, Stefan

PY - 2002

Y1 - 2002

N2 - Blanket and divertor components of ITER are complicated in design and reliable reactor operation sets special requirements on applied manufacturing methods and on quality and integrity assessment methods. R&D programmes have been implemented to develop suitable nondestructive testing method as a part of ITER Primary First Wall and Divertor component manufacturing programmes. The suitability of several nondestructive testing methods have been evaluated i.e. ultrasonic inspection, eddy current, X-ray, infrared thermography and leak testing during different manufacturing stages as a quality assurance method and after thermal fatigue tests as an integrity assessment method. In this study ultrasonic methods have been applied to evaluate structural integrity of several ITER Primary First Wall and Divertor Vertical Target mock-ups before and after thermal fatigue and high heat flux tests. The techniques used were leaky Rayleigh wave and longitudinal wave reflection techniques. The applicability of ultrasonic methods was evaluated by using small scale mock-ups with artificial manufacturing defects on different interfaces. In addition to outer surfaces of the mock-ups several dissimilar metal planar and tubular interfaces have been examined i.e. Be and Cu surfaces and Be/Cu, Cu/Cu, Cu/Stain-less steel, W/Cu and CfC/Cu interfaces. The ultrasonic examinations were carried out before and after cyclic thermal loading for ITER Primary First Wall mock-ups up to 4 MWm-2 and for ITER Divertor Vertical Target mock-up up to 15 MWm-2. The leaky Rayleigh wave technique was used to detect surface defects and interface defects in different joints. The longitudinal wave reflection was used only for interface defects. New probes were designed for inspection tasks. The NDT methods are compared briefly in this paper as well as the accuracy of detecting defects with ultrasonic testing methods.

AB - Blanket and divertor components of ITER are complicated in design and reliable reactor operation sets special requirements on applied manufacturing methods and on quality and integrity assessment methods. R&D programmes have been implemented to develop suitable nondestructive testing method as a part of ITER Primary First Wall and Divertor component manufacturing programmes. The suitability of several nondestructive testing methods have been evaluated i.e. ultrasonic inspection, eddy current, X-ray, infrared thermography and leak testing during different manufacturing stages as a quality assurance method and after thermal fatigue tests as an integrity assessment method. In this study ultrasonic methods have been applied to evaluate structural integrity of several ITER Primary First Wall and Divertor Vertical Target mock-ups before and after thermal fatigue and high heat flux tests. The techniques used were leaky Rayleigh wave and longitudinal wave reflection techniques. The applicability of ultrasonic methods was evaluated by using small scale mock-ups with artificial manufacturing defects on different interfaces. In addition to outer surfaces of the mock-ups several dissimilar metal planar and tubular interfaces have been examined i.e. Be and Cu surfaces and Be/Cu, Cu/Cu, Cu/Stain-less steel, W/Cu and CfC/Cu interfaces. The ultrasonic examinations were carried out before and after cyclic thermal loading for ITER Primary First Wall mock-ups up to 4 MWm-2 and for ITER Divertor Vertical Target mock-up up to 15 MWm-2. The leaky Rayleigh wave technique was used to detect surface defects and interface defects in different joints. The longitudinal wave reflection was used only for interface defects. New probes were designed for inspection tasks. The NDT methods are compared briefly in this paper as well as the accuracy of detecting defects with ultrasonic testing methods.

M3 - Conference abstract in proceedings

SN - 951-38-5730-1

T3 - VTT Symposium

SP - 78

EP - 78

BT - 22nd Symposium on Fusion Technology

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Pitkänen J, Kauppinen P, Jeskanen H, Tähtinen S, Sandlin S. Ultrasonic studies on iter divertor and first wall prototype modules. In 22nd Symposium on Fusion Technology: Book of Abstracts. Espoo: VTT Technical Research Centre of Finland. 2002. p. 78-78. B-36. (VTT Symposium; No. 220).