Results 31 to 40 of about 5,622 (205)

A review of miniaturised Non-Destructive Testing technologies for in-situ inspections [PDF]

open access: yes, 2018
Non-destructive testing (NDT) techniques have become attractive trends of product manufacturing, installation and post-maintenance in the aerospace, automotive and manufacturing industry, because of its benefits such as cost saving, easy to use and high ...
Addepalli   +12 more
core   +1 more source

Thermographic non-destructive evaluation for natural fiber-reinforced composite laminates [PDF]

open access: yes, 2018
Natural fibers, including mineral and plant fibers, are increasingly used for polymer composite materials due to their low environmental impact. In this paper, thermographic non-destructive inspection techniques were used to evaluate and characterize ...
Avdelidis, Nicolas P.   +7 more
core   +3 more sources

Lock-In Thermal Test Simulation, Influence, and Optimum Cycle Period for Infrared Thermal Testing in Non-Destructive Testing

open access: yesSensors, 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
doaj   +1 more source

On the use of lock-in thermography to monitor delamination growth in composite panels under compression

open access: yesScience 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
doaj   +1 more source

Application of NDT thermographic imaging of aerospace structures [PDF]

open access: yes, 2019
This work aims to address the effectiveness and challenges of Non-Destructive Testing (NDT) inspection and improve the detection of defects without causing damage to the material or operator.
Avdelidis, N. P.   +9 more
core   +2 more sources

Comparative study on the detection of early dental caries using thermo-photonic lock-in imaging and optical coherence tomography [PDF]

open access: yes, 2018
Early detection of dental caries is known to be the key to the effectiveness of therapeutic and preventive approaches in dentistry. However, existing clinical detection techniques, such as radiographs, are not sufficiently sensitive to detect and monitor
Shokouhi, Elnaz B.   +3 more
core   +1 more source

Safety Evaluation for Pure Titanium by Lock-in Infrared Thermography [PDF]

open access: yesMATEC 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
doaj   +1 more source

A local defect resonance for linear and nonlinear ultrasonic thermography [PDF]

open access: yes, 2014
An efficient wave-defect interaction is the key to a high thermal response of flaws in ultrasonic thermography. To selectively enhance defect vibrations a concept of local defect resonance is developed and applied to ultrasonic activation of defects ...
Solodov, I., Rahammer, M., Busse, G.
core   +1 more source

New Developments in IR Lock-In Thermography [PDF]

open access: yesInternational 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
openaire   +1 more source

Proposal of fiber orientation identification method for discontinuous fiber CFRP based on thermal diffusivity distribution measurement using lock-in thermography and demonstration of its effectiveness by mechanical properties

open access: yesNihon 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
doaj   +1 more source

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