Optical methods for non-contact measurements of membranes

Roose, Stéphane; Stockman, Yvan; Rochus, Pierre; Kuhn, T.; Lang, M.; Baier, H.; Langlois, S.; Casarosa, Gianluca

doi:10.1016/j.actaastro.2009.03.061

Cited by 18 publications

(4 citation statements)

References 4 publications

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“…Shadow moiré and projection moiré are noncontact and nondestructive detecting methods for measuring out-of-plane displacements and can be make on-line, full-field measurements. Shadow moiré is the preferred method for larger samples, and projection moiré is more suit for smaller sample size [1]- [3]. In this paper, the simple nondestructive shadow moiré technique would be taken for discussing the warpage issues associated with the warpage deformation of silicon wafer.…”

Section: Introductionmentioning

confidence: 99%

Notice of Retraction: 3-D warpage measurement of silicon wafer

Zhang

Zhu

Song

et al. 2011

2011 2nd International Conference on Artificial Intelligence, Management Science and Electronic Commerce (AIMSEC)

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Section: Introductionmentioning

confidence: 99%

Notice of Retraction: 3-D warpage measurement of silicon wafer

Zhang

Zhu

Song

et al. 2011

2011 2nd International Conference on Artificial Intelligence, Management Science and Electronic Commerce (AIMSEC)

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“…The high precision afforded by contemporary LDV systems has seen their use in a wide range of applications in which non-contact measurement is beneficial, from microscopic organic tissue to large civil structures [39][40][41]. A noteworthy application of LDV is in the modal analysis of ultra-light structures, for which the mass of even relatively lightweight contactmeasurement sensors, such as miniature accelerometers, is enough to bias results [38,42,43]. Furthermore, non-contact techniques such as LDV offer an advantage for observing surfaces that might not be accessible to physical sensors.…”

Section: Laser Doppler Vibrometry As a Technology For Post-welding Ev...mentioning

confidence: 99%

Laser Doppler Vibrometry for Evaluating the Quality of Welds in Lithium-Ion Supercells

Ratner

Wood

Chowanietz³

et al. 2022

Energies

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The inspection of the quality of welds in battery packs plays an important role in ensuring safety during the manufacturing and operation of energy-storage devices in automotive vehicles during service. This research investigated the novel application of laser Doppler vibrometry, a widely used non-destructive optical technique for modal analysis, to the post-weld evaluation of micro-TIG-welded interconnections in lithium-ion supercells. The experimental modal analysis showed features in the modal models of the supercells that were unique to their welding conditions. The comparisons between the supercells showed an absence of linear correlations between the modal parameters and the welding current, as well as differences in the welding parameters obtained from the negative and positive terminals of the cylindrical cells. These findings suggested that the modal parameters of the supercells were more strongly influenced by the rigidity of the structural materials than by the localized compliance of the welded interconnections. While this investigation demonstrated a method for using laser Doppler vibrometry to distinguish between different welding conditions in lithium-ion supercells at a structural level, further development is needed to identify the weld quality of individual interconnections.

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“…Membrane structures are applied to a variety of large gossamer space structures, such as solar sails, large space inflatable antenna reflectors and so on [1,2]. One of the main features of membrane structural response is wrinkling under compressive stress.…”

Section: Introductionmentioning

confidence: 99%

Experiment and evaluation of wrinkling strain in a corner tensioned square membrane

2014

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Prediction of wrinkling characteristics is strongly correlated with the strain perpendicular to wrinkling direction. In this paper, the strain field of wrinkled membrane is tested by VIC-3D system based on the digital image correlation technique. Experimental results are validated by the tension wrinkling simulation. The experimental strain perpendicular to wrinkling direction is analyzed in depth. The wrinkling strain of a square wrinkled membrane under corner tension is extracted from experimental strain perpendicular to wrinkling direction. A quantitative characterization format of the experimental wrinkling strain is proposed. A modified prediction method of wrinkling amplitude is presented based on the experimental wrinkling strain. The results show that the precision of modified prediction model has improved 13.2% compared with the classical prediction model. The results reveal that the modified model can give an accurate prediction of the wrinkling amplitude.

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Optical methods for non-contact measurements of membranes

Cited by 18 publications

References 4 publications

Notice of Retraction: 3-D warpage measurement of silicon wafer

Notice of Retraction: 3-D warpage measurement of silicon wafer

Laser Doppler Vibrometry for Evaluating the Quality of Welds in Lithium-Ion Supercells

Experiment and evaluation of wrinkling strain in a corner tensioned square membrane

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