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Research paper thumbnail of Results of the European collaborative project “Product Uniformity Control“ to improve the inline sensing of mechanical properties and microstructure of automotive steels

A European consortium consisting of four major steel manufacturers and ten academic technology in... more A European consortium consisting of four major steel manufacturers and ten academic technology institutes has conducted a research and development project, called “Product Uniformity Control“ (PUC) in the period 2013 to 2017. This project aimed to develop and improve non-destructive (inline) measurement techniques to characterise the (uniformity of the) microstructure of steel strip products. In this project, a multitude of strip steel samples from various stages of production have been collected from the four participating steel manufacturers. The samples have been characterised in various ways, namely on their (1) non-destructive measurement parameters using different techniques suited for inline evaluation, (2) fundamental ultrasonic and electromagnetic properties (wave speed, ultrasonic attenuation, magnetisation loops, coercive field), (3) tensile properties (stress-strain curves) and (4) microstructure (by optical micrographs and EBSD images). The correlations between these di...

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Research paper thumbnail of Validation of models for Laser Ultrasonic spectra as a function of the grain size in steel

To reduce costs of production and increase economic sustainability it is necessary to introduce q... more To reduce costs of production and increase economic sustainability it is necessary to introduce quality assessment in an early stage in the manufacturing process. In an ongoing European project (Product Uniformity Control – PUC), the intention is to use ultrasonic information to assess microstructure parameters that are related to macroscale qualities such as mechanical properties. Laser induced ultrasonic technique (LUS) requires no media and can generate and detect ultrasonic information at some distance from the component. This technique is therefore addressed within this project as a solution to measure ultrasonic properties in an industrial environment. Mathematical modelling of the ultrasonic wave propagation problem has been used in order to get a deeper understanding of the physics and to identify ultrasonic properties that can be used as an indirect measurement of grain size. The use of both analytical and numerical models enabled extensive parametric studies together with ...

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Research paper thumbnail of Experimental validation of a phased array probe model in ultrasonic inspection

Ultrasonics, 2020

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Research paper thumbnail of Benchmarking - a validation of UTDefect

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Research paper thumbnail of Integrity and quality assessment applied on laser welded titanium components

MATEC Web of Conferences, 2014

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Research paper thumbnail of An ultrasonic methodology to non-destructively estimate the grain orientation in an anisotropic weld

MATEC Web of Conferences, 2014

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Research paper thumbnail of Integral equation method for evaluation of eddy-current impedance of a tilted, surface-breaking crack

Journal of Applied Physics, 2013

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Research paper thumbnail of Study of Defect Characteristics Essential for NDT Testing

SKI Project Number 98267 This report concerns a study which has been conducted for the Swedish Nu... more SKI Project Number 98267 This report concerns a study which has been conducted for the Swedish Nuclear Power Inspectorate (SKI). The conclusions and viewpoints presented in the report are those of the authors and do not necessarily coincide with those of the SKI. This paper presents results from a literature review of defect characteristics essential for non-destructive testing (NDT). Most of the major NDT methods are included in the study- ultrasonic testing (UT), radiography (RT) and eddy current testing (ET). The study was performed by means of searching in scientific databases, technical journals, conference proceedings etc. Mainly, the following databases were used: CHANS

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Research paper thumbnail of In-situ detection of redeposited spatter and its influence on the formation of internal flaws in laser powder bed fusion

Additive Manufacturing

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Research paper thumbnail of Comparison between three mathematical models of three well defined ultrasonic NDT cases

IOP Conference Series: Materials Science and Engineering

Ultrasonic nondestructive testing (NDT) is commonly used for in-service inspection in different a... more Ultrasonic nondestructive testing (NDT) is commonly used for in-service inspection in different areas. But reliability of NDT method is highly dependent on the equipment and crack features. Although, it is possible to use thoroughly validated mathematical models to avoid complicated and costly experimental work, when it is necessary to qualify new procedures. Finite Element Model (FEM) is a powerful tool, which is commonly used for such cases. In this paper three mathematical models of three well defined cases will be compared with each other.

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Research paper thumbnail of SKI Report 00 : 42 Study of Defect Characteristics Essential for NOT Testing Methods ET , UT and RT

This paper presents results from a literature review of defect characteristics essential for non-... more This paper presents results from a literature review of defect characteristics essential for non-destructive testing (NDT). Most of the major NDT methods are included in the study ultrasonic testing (UT), radiography (RT) and eddy current testing (ET). The study was performed by means of searching in scientific databases, technical journals, conference proceedings etc. Mainly, the following databases were used: CHANS (Chalmers database), INSPEC, NTIS, Ei Compendex, World Surface Coating Abs, METADEX, JICST-Eplus, Aerospace database, Pascal, Eng Materials, SciSearch and Weldasearch. It is concluded that for eddy current testing, the defect geometry, the defect size and the defect orientation influence the outcome signal. A number of investigations address the relationships between the defect parameters like defect depth, length and width and the outcome signal parameters like amplitude, phase and signal shape. Also the phenomena of the electrical contacts between the defect surfaces ...

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Research paper thumbnail of The application of mathematical modeling of ultrasonic NDT in the qualification process

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Research paper thumbnail of Examples of mathematical modeling used as a tool within NDT qualification

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Research paper thumbnail of Experimental validation of the UTDefect software

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Research paper thumbnail of Experimental validation of UTDefect

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Research paper thumbnail of RECENT SURVEY AND APPLICATION OF THE simSUNDT SOFTWARE

AIP Conference Proceedings, 2010

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Research paper thumbnail of UTDefect: A simulation tool for ultrasonic NDT

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Research paper thumbnail of Novel passive and active tungsten-based identifiers for maintaining the continuity of knowledge of spent nuclear fuel copper canisters

Annals of Nuclear Energy, 2015

ABSTRACT A new approach to provide a long-term safeguards identification of spent nuclear fuel co... more ABSTRACT A new approach to provide a long-term safeguards identification of spent nuclear fuel containers, in particular copper canisters, is presented in this paper. The approach proposes the use of a tungsten insert marked with a binary code and placed inside the container. The insert is read with a combination of two independent techniques, radiation and ultrasonic measurements, in order to get a unique identification of the cask. Passive and active versions of the tag are considered. The passive version makes use of the radiation coming from the spent nuclear fuel itself. The active version of the tag is based on the use of an artificially introduced mixture of α-emitting isotopes, such as 241Am with materials, 11B and 23Na, which easily undergo α-induced reactions with emission of specific γ-lines, 2313 keV and 1809 keV, respectively. The paper discusses results of the radiation and ultrasonic measurements and Monte-Carlo evaluations as the first proof of the concept. The results of the investigations show the strong potential for this concept to maintain the continuity of knowledge of spent nuclear fuel copper canisters for a time scale up to a few thousands years without compromising the environmental safety of the casks.

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Research paper thumbnail of Ultrasonic simulation of immersion pulse-echo situation and experimental validations

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Research paper thumbnail of Ultrasonic NDT in Defect Detection - Mathematical modelling

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Research paper thumbnail of Results of the European collaborative project “Product Uniformity Control“ to improve the inline sensing of mechanical properties and microstructure of automotive steels

A European consortium consisting of four major steel manufacturers and ten academic technology in... more A European consortium consisting of four major steel manufacturers and ten academic technology institutes has conducted a research and development project, called “Product Uniformity Control“ (PUC) in the period 2013 to 2017. This project aimed to develop and improve non-destructive (inline) measurement techniques to characterise the (uniformity of the) microstructure of steel strip products. In this project, a multitude of strip steel samples from various stages of production have been collected from the four participating steel manufacturers. The samples have been characterised in various ways, namely on their (1) non-destructive measurement parameters using different techniques suited for inline evaluation, (2) fundamental ultrasonic and electromagnetic properties (wave speed, ultrasonic attenuation, magnetisation loops, coercive field), (3) tensile properties (stress-strain curves) and (4) microstructure (by optical micrographs and EBSD images). The correlations between these di...

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Research paper thumbnail of Validation of models for Laser Ultrasonic spectra as a function of the grain size in steel

To reduce costs of production and increase economic sustainability it is necessary to introduce q... more To reduce costs of production and increase economic sustainability it is necessary to introduce quality assessment in an early stage in the manufacturing process. In an ongoing European project (Product Uniformity Control – PUC), the intention is to use ultrasonic information to assess microstructure parameters that are related to macroscale qualities such as mechanical properties. Laser induced ultrasonic technique (LUS) requires no media and can generate and detect ultrasonic information at some distance from the component. This technique is therefore addressed within this project as a solution to measure ultrasonic properties in an industrial environment. Mathematical modelling of the ultrasonic wave propagation problem has been used in order to get a deeper understanding of the physics and to identify ultrasonic properties that can be used as an indirect measurement of grain size. The use of both analytical and numerical models enabled extensive parametric studies together with ...

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Research paper thumbnail of Experimental validation of a phased array probe model in ultrasonic inspection

Ultrasonics, 2020

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Benchmarking - a validation of UTDefect

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Integrity and quality assessment applied on laser welded titanium components

MATEC Web of Conferences, 2014

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Research paper thumbnail of An ultrasonic methodology to non-destructively estimate the grain orientation in an anisotropic weld

MATEC Web of Conferences, 2014

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Research paper thumbnail of Integral equation method for evaluation of eddy-current impedance of a tilted, surface-breaking crack

Journal of Applied Physics, 2013

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Research paper thumbnail of Study of Defect Characteristics Essential for NDT Testing

SKI Project Number 98267 This report concerns a study which has been conducted for the Swedish Nu... more SKI Project Number 98267 This report concerns a study which has been conducted for the Swedish Nuclear Power Inspectorate (SKI). The conclusions and viewpoints presented in the report are those of the authors and do not necessarily coincide with those of the SKI. This paper presents results from a literature review of defect characteristics essential for non-destructive testing (NDT). Most of the major NDT methods are included in the study- ultrasonic testing (UT), radiography (RT) and eddy current testing (ET). The study was performed by means of searching in scientific databases, technical journals, conference proceedings etc. Mainly, the following databases were used: CHANS

Bookmarks Related papers MentionsView impact

Research paper thumbnail of In-situ detection of redeposited spatter and its influence on the formation of internal flaws in laser powder bed fusion

Additive Manufacturing

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Comparison between three mathematical models of three well defined ultrasonic NDT cases

IOP Conference Series: Materials Science and Engineering

Ultrasonic nondestructive testing (NDT) is commonly used for in-service inspection in different a... more Ultrasonic nondestructive testing (NDT) is commonly used for in-service inspection in different areas. But reliability of NDT method is highly dependent on the equipment and crack features. Although, it is possible to use thoroughly validated mathematical models to avoid complicated and costly experimental work, when it is necessary to qualify new procedures. Finite Element Model (FEM) is a powerful tool, which is commonly used for such cases. In this paper three mathematical models of three well defined cases will be compared with each other.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of SKI Report 00 : 42 Study of Defect Characteristics Essential for NOT Testing Methods ET , UT and RT

This paper presents results from a literature review of defect characteristics essential for non-... more This paper presents results from a literature review of defect characteristics essential for non-destructive testing (NDT). Most of the major NDT methods are included in the study ultrasonic testing (UT), radiography (RT) and eddy current testing (ET). The study was performed by means of searching in scientific databases, technical journals, conference proceedings etc. Mainly, the following databases were used: CHANS (Chalmers database), INSPEC, NTIS, Ei Compendex, World Surface Coating Abs, METADEX, JICST-Eplus, Aerospace database, Pascal, Eng Materials, SciSearch and Weldasearch. It is concluded that for eddy current testing, the defect geometry, the defect size and the defect orientation influence the outcome signal. A number of investigations address the relationships between the defect parameters like defect depth, length and width and the outcome signal parameters like amplitude, phase and signal shape. Also the phenomena of the electrical contacts between the defect surfaces ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The application of mathematical modeling of ultrasonic NDT in the qualification process

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Examples of mathematical modeling used as a tool within NDT qualification

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Experimental validation of the UTDefect software

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Experimental validation of UTDefect

Bookmarks Related papers MentionsView impact

Research paper thumbnail of RECENT SURVEY AND APPLICATION OF THE simSUNDT SOFTWARE

AIP Conference Proceedings, 2010

Bookmarks Related papers MentionsView impact

Research paper thumbnail of UTDefect: A simulation tool for ultrasonic NDT

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Novel passive and active tungsten-based identifiers for maintaining the continuity of knowledge of spent nuclear fuel copper canisters

Annals of Nuclear Energy, 2015

ABSTRACT A new approach to provide a long-term safeguards identification of spent nuclear fuel co... more ABSTRACT A new approach to provide a long-term safeguards identification of spent nuclear fuel containers, in particular copper canisters, is presented in this paper. The approach proposes the use of a tungsten insert marked with a binary code and placed inside the container. The insert is read with a combination of two independent techniques, radiation and ultrasonic measurements, in order to get a unique identification of the cask. Passive and active versions of the tag are considered. The passive version makes use of the radiation coming from the spent nuclear fuel itself. The active version of the tag is based on the use of an artificially introduced mixture of α-emitting isotopes, such as 241Am with materials, 11B and 23Na, which easily undergo α-induced reactions with emission of specific γ-lines, 2313 keV and 1809 keV, respectively. The paper discusses results of the radiation and ultrasonic measurements and Monte-Carlo evaluations as the first proof of the concept. The results of the investigations show the strong potential for this concept to maintain the continuity of knowledge of spent nuclear fuel copper canisters for a time scale up to a few thousands years without compromising the environmental safety of the casks.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Ultrasonic simulation of immersion pulse-echo situation and experimental validations

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Ultrasonic NDT in Defect Detection - Mathematical modelling

Bookmarks Related papers MentionsView impact