Application of X-ray refraction topography to fibre reinforced plastics

Rudolph, Hans-Volker; Ivers, H.; Harbich, Karl-Wolfram

doi:10.1016/s1359-835x(00)00057-9

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…This technique was also used for characterizing fibre cracks, microcracks and debonding on a glass-fibre reinforced polyoximethylene (POM-GF) composite, after mechanical loading and accelerated aging [55]. Several techniques based on the X-ray refraction phenomenon can be applied for 2D/3D microstructural characterization as for example i) X-ray refraction topography (XRRT, based on the scanning of the sample using a X-ray beam), ii) X-ray refraction radiography (XRRR, or direct 2D imaging typically implemented using a synchrotron source) and iii) X-ray refraction tomography (XRCT).…”

Section: Introductionmentioning

confidence: 99%

Phase transformation induces plasticity with negligible damage in ceria-stabilized zirconia-based ceramics

et al. 2020

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Ceramics and their composites are in general brittle materials because they are predominantly made up of ionic and covalent bonds that avoid dislocation motion at room temperature. However, a remarkable ductile behavior has been observed on newly developed 11 mol.% ceria-stabilized zirconia (11Ce-TZP) composite containing fine alumina (8vol.% Al 2 O 3 ) and elongated strontium hexa-aluminate (8vol.% SrAl 12 O 19 ) grains. The assynthesized composite also has shown full resistance to Low Temperature Degradation (LTD), relatively high strength and exceptionally high Weibull modulus, allowing its use in a broader range of biomedical applications. In this study, to deepen the understanding of *Manuscript Click here to download Manuscript: TEXT-Final_revised_reveron et al.docx Click here to view linked References plastic deformation in Ce-TZP based composites that could soon be used for manufacturing dental implants, different mechanical tests were applied on the material, followed by complete microstructural characterization. Distinct from pure Ce-TZP material or other zirconia-based ceramics developed in the past, the material here studied can be permanently strained without affecting the Young modulus, indicating that the ductile response of tested samples cannot be associated to damage occurrence. This ductility is related to the stressinduced tetragonal to monoclinic (t-m) zirconia phase transformation, analogue to Transformation-Induced Plasticity (TRIP) steels, where retained austenite is transformed to martensite. The aim of this study is to corroborate if the observed plasticity can be associated exclusively to the zirconia t-m phase transformation, or also to microcraking induced by the transformation. The t-m transformed-zones produced after bending and biaxial tests were examined by X-ray refraction and SEM/TEM coupled with Raman. The results revealed that the observed elastic-plastic behavior occurs without extensive microcracking, confirming a purely elastic-plastic behavior driven by the phase transformation (absence of damage).

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Section: Introductionmentioning

confidence: 99%

Phase transformation induces plasticity with negligible damage in ceria-stabilized zirconia-based ceramics

et al. 2020

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“…PA66/30 wt.% glass fibers Arif et al [63] Fiber-matrix interfaces, voids, delamination and cracking of fibers, as well as microcracks can be observed. POM/30 wt.% glass fibers Rudolph et al [64] Summary. In most cases, the CT method was implemented to evaluate fiber distributions in SFRPs reinforced with short glass fibers (GFs) at contents of about 30 wt.%.…”

Section: Methods and Their Specifics Materials And Dimensions Of Samp...mentioning

confidence: 99%

“…In [64], Rudolph et al have described an unconventional, small angle X-ray diffraction scattering technique, which was developed and applied to solve some NDT issues. In principle, this method is similar to X-ray imaging (in microtomography) but it is based on X-ray refraction.…”

Section: Computed Tomographymentioning

confidence: 99%

Fatigue Damage Assessment and Lifetime Prediction of Short Fiber Reinforced Polymer Composites—A Review

Bogdanov,

Panin,

Kosmachev

2023

J. Compos. Sci.

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This paper reviews the findings in the area of fatigue damage assessment and lifetime prediction of short fiber reinforced polymer composites (SFRPs) under cyclic loading. It is shown that the direct methods of microstructure/damage inspection are the most sensitive and informative, while micro-computed tomography (μ-CT) is more laborious and possesses limitations in sample dimensions. Although the sensitivity of the indirect methods can vary, the most common one is based on stiffness reduction. It is shown that developing models of fatigue processes is impossible without assessing the degree of damage. The latter can be determined by stiffness reduction, the development of creep, or energy dissipation. Since fatigue mechanisms can differ, the most complete information can be obtained by combining these methods. The prediction results for fatigue life models based on plastic strain development showed the greatest agreement with the experimental results in comparison with other prediction models. In addition, some tasks are highlighted as the priority directions for the development of SFRPs and non-destructive testing (NDT) methods for their monitoring under fatigue.

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Fatigue and Fracture

2003

ISSC 2003 - 15th International Ship and Offshore Structures Congress

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Application of X-ray refraction topography to fibre reinforced plastics

Cited by 4 publications

References 2 publications

Phase transformation induces plasticity with negligible damage in ceria-stabilized zirconia-based ceramics

Phase transformation induces plasticity with negligible damage in ceria-stabilized zirconia-based ceramics

Fatigue Damage Assessment and Lifetime Prediction of Short Fiber Reinforced Polymer Composites—A Review

Fatigue and Fracture

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