Detection of stress whitening in plastics with the help of X-ray dark field imaging

被引：16

作者：

Jerjen, Iwan ^{[1
]}

Revol, Vincent ^{[2
]}

Brunner, Andreas J. ^{[1
]}

Schuetz, Philipp ^{[1
]}

Kottler, Christian ^{[2
]}

Kaufmann, Rolf ^{[2
]}

Luethi, Thomas ^{[1
]}

Nicoletti, Giovanni ^{[1
]}

Urban, Claus ^{[2
]}

Sennhauser, Urs ^{[1
]}

机构：

[1] Swiss Fed Labs Mat Sci & Technol, Empa, CH-8600 Dubendorf, Switzerland

[2] Ctr Suisse Elect & Microtech SA, Microsyst Technol Div, CH-8005 Zurich, Switzerland

来源：

POLYMER TESTING | 2013年 / 32卷 / 06期

关键词：

X-ray dark field imaging; X-ray differential phase contrast imaging; Stress whitening; Non-destructive testing of polymer parts; POLYVINYLIDENE FLUORIDE; GRATING INTERFEROMETER; CAVITATION; MICROTOMOGRAPHY; SCATTERING; POROSITY; FRACTURE; Z=1-92; PVDF;

D O I：

10.1016/j.polymertesting.2013.06.008

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The processing of thermoplastics can induce a wide range of defects such as stress whitening, cavitation and porosity, which can adversely affect the reliability of the final products. Hence, fast and effective non-destructive detection methods for such defects are highly important for quality assurance on production lines. In this paper, X-ray dark field imaging is presented as a new non-destructive testing method that allows the visualization of stress whitening or cavitation efficiently. The performance of the method is demonstrated for the case of an injection-moulded polyvinylidene fluoride part that exhibits stress whitening. Whereas the stress whitening could not be detected by conventional X-ray imaging, it was localized by an X-ray dark field image acquired within a few minutes. Once the precise location of the stress whitening was known, it was possible to verify the result by local micro X-ray computed tomography and by a micro section image. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：1094 / 1098

页数：5

共 29 条

[1]

Babinec S.J., 2007, ECS T, V3, P233

[2] Characterization of cavitation development while tensile testing PVF2 using 3D X-ray microtomography [J].

Brusselle-Dupend, N. ;

Rosenberg, E. ;

Adrien, J. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 530 :36-50

[3] Cavitation in strained polyvinylidene fluoride: mechanical and X-ray experimental studies [J].

Castagnet, S ;

Girault, S ;

Gacougnolle, JL ;

Dang, P .

POLYMER, 2000, 41 (20) :7523-7530

[4] Damage and fracture of polyvinylidene fluoride (PVDF) at 20 °C:: Experiments and modelling [J].

Challier, M ;

Besson, J ;

Laiarinandrasana, L ;

Piques, R .

ENGINEERING FRACTURE MECHANICS, 2006, 73 (01) :79-90

[5] THEORETICAL FORM-FACTOR, ATTENUATION AND SCATTERING TABULATION FOR Z=1-92 FROM E=1-10 EV TO E=0.4-1.0 MEV [J].

CHANTLER, CT .

JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 1995, 24 (01) :71-591

[6]

Clauser J. F., 1992, WORK, V395, P380

[7] Effect of degree of porosity on the properties of poly(vinylidene fluoride-trifluorethylene) for Li-ion battery separators [J].

Costa, C. M. ;

Rodrigues, L. C. ;

Sencadas, V. ;

Silva, M. M. ;

Rocha, J. G. ;

Lanceros-Mendez, S. .

JOURNAL OF MEMBRANE SCIENCE, 2012, 407 :193-201

[8] Differential x-ray phase contrast imaging using a shearing interferometer [J].

David, C ;

Nöhammer, B ;

Solak, HH ;

Ziegler, E .

APPLIED PHYSICS LETTERS, 2002, 81 (17) :3287-3289

[9] New replication technique for the fabrication of thin polymeric microfluidic devices with tunable porosity [J].

de Jong, J ;

Ankoné, B ;

Lammertink, RGH ;

Wessling, M .

LAB ON A CHIP, 2005, 5 (11) :1240-1247

[10] PRACTICAL CONE-BEAM ALGORITHM [J].

FELDKAMP, LA ;

DAVIS, LC ;

KRESS, JW .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1984, 1 (06) :612-619

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