Results 21 to 30 of about 670 (184)
Sensors, 2020 The current necessity of the scientific and industrial community, for reduction of aircraft maintenance cost and duration, prioritizes the need for development of innovative nondestructive techniques enabling fast and reliable defect detection on ...
Spyridoula Farmaki +4 more
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Infrared Lock-in Thermography Tests with Optical Feedback
U.Porto Journal of Engineering, 2022 Thermography using a period light stimulation. However, the results are highly dependent on the accuracy of the stimulation source and its dynamic response.
António José Ramos Silva +3 more
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Improvement the temperature signal filtering in lock-in thermography
MATEC Web of Conferences, 2018 At present, lock-in thermography is widely used non-destructive method for defects detection. The informative images in lock-in thermography (e.g. phasegram) are obtained after temperature signal filtering of the raw data.
Stoynova Anna, Bonev Borislav
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Dynamic Thermal Contact Resistance Measurement Method Using Lock-in Thermography
Proceedings, 2019 This paper proposes a new thermal contact resistance measurement method using lock-in thermography. By the lock-in thermography with an infrared microscope, the dynamic temperature behavior across the contact interface was visualized in the sample side ...
Takuya Ishizaki +3 more
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Sensors, 2022 Lock-in thermal tests (LTTs) are one of the best ways to detect defects in composite materials. The parameter that most affects their performance is the cycle period of the stimulation wave.
António Ramos Silva +3 more
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Science and Engineering of Composite Materials, 2014 The success of composites in automotive, aerospace, and naval applications is mainly related to their aptitude to be tailored to obtain a final product that perfectly fulfills the design requirements.
Toscano Cinzia +3 more
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Safety Evaluation for Pure Titanium by Lock-in Infrared Thermography [PDF]
MATEC Web of Conferences, 2020 The lock-in infrared thermography has been applied to an estimation of fatigue limits at several stress ratios, i.e., R=-1, 0.05, and 0.5, for commercially pure titanium (CP-Ti JIS grade 2) at room temperature.
Matsunaga T. +3 more
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Nihon Kikai Gakkai ronbunshu, 2020 In this study, a novel nondestructive evaluation method is proposed to investigate the fiber orientation distribution of discontinuous Carbon Fiber Reinforced Plastic (CFRP).
Kohei MIYACHI +3 more
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New Developments in IR Lock-In Thermography [PDF]
International Symposium for Testing and Failure Analysis, 2004 Abstract Lock-in thermography based on an infrared camera has proven to be a useful tool for failure analysis of integrated circuits (ICs). This article discusses four novel technical developments of lock-in thermography. These developments are blackening the IC surface with colloidal bismuth, the synchronous undersampling technique ...
O. Breitenstein +5 more
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Laser lock-in thermography on dental inspection [PDF]
AIP Conference Proceedings, 2019 Detection of cracks in teeth and the evaluation of a dental restoration in a non-invasive way is of paramount importance in clinical practice. Common dental X-ray diagnosis is precise but causes a lot of concerns due to its ionizing radiation nature, not-so-comfortable patient experiences, as well as used-in-caution for women in pregnancy, etc.
Andrew Ngo Chun Yong +2 more
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