Patent
Laser-based maintenance apparatus
Makoto c,Yoshiaki c,Takahiro c,Mitsuaki c,Masaki c,Hidehiko c,Chida Itaru,Fukashi c,Satoshi c,Kentaro c,Ryoichi c,Masahiro c,Tetsuo c,Toru c,Akira c +14 more
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TLDR
In this article, the authors describe a laser maintenance system including a laser system which includes an optical system for emitting, in a first irradiation condition, a generation laser beam for generating an ultrasonic wave in a portion of an object on which maintenance is to be performed.Abstract:
A laser maintenance apparatus including a laser system which includes an optical system for emitting, in a first irradiation condition, a generation laser beam for generating an ultrasonic wave in a portion of an object on which maintenance is to be performed, and including a laser source configured to generate and detect a detection laser beam which interacts with the ultrasonic wave generated by the laser light beam in the first condition The laser maintenance apparatus also includes a light transmitting device for transmitting laser light emitted from the laser system, a laser irradiation device for irradiating laser light transmitted by the light transmitting device to the object portion, and a transporting/scanning mechanism for transporting the light transmitting device and the laser irradiation device to a portion near the object portion, and scanning over an arbitrary range at the object portionread more
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Patent
Automated polarization correction
TL;DR: A chirped pulse amplification system includes one or more polarization compensators configured to compensate for polarization altering elements with the Chirped Pulse Amplification System (CPAS) as discussed by the authors.
Patent
Laser ablation method and apparatus having a feedback loop and control unit
Peter Delfyett,Richard Stoltz +1 more
TL;DR: In this article, a probe is used to measure an indicative property of the ablation target or of the pulsed laser projected on the target, which is then used to optimize ablation effect by generating a feedback signal according to the measured indicative property.
Patent
Defect Inspection Method and Defect Inspection Device
TL;DR: A defect inspection method and device for irradiating a linear region on a surface patterned sample mounted on a table, with illumination light from an inclined direction to the sample, next detecting in each of a plurality of directions an image of the light scattered from the sample irradiated with the illumination light, then processing signals obtained by the detection of the images of the scattered light, and thereby detecting a defect present on the sample as discussed by the authors.
Patent
Welding system and welding method
Takahiro Miura,Yamamoto Setsu,Takeshi Hoshi,Tsuyoshi Ogawa,Yoshihiro Fujita,Shozo Hirano,Kazumi Watanabe,Satoshi Nagai,Masahiro Yoshida,Jun Semboshi,Satoru Asai,Makoto Ochiai +11 more
TL;DR: In this article, a welding system has: a welding mechanism, a reception laser light source, an optical mechanism, an interferometer, a data recording/ analysis mechanism and a data analysis/analysis mechanism.
Patent
Systems and processes that singulate materials
TL;DR: In this paper, a first laser output was applied to the material, and then a second laser was used to singulate the material in such a way that surfaces created by the singulation of the material were substantially free from defects.
References
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Patent
Laser-ultrasound spectroscopy apparatus and method with detection of shear resonances for measuring anisotropy, thickness, and other properties
Daniel Lévesque,André Moreau,Marc Dubois,Jean-Pierre Monchalin,Jean F. Bussière,Martin Lord,Christian Padioleau +6 more
TL;DR: In this paper, the authors proposed a method for detecting shear resonances in an object using laser-ultrasound spectroscopy, which can be used to improve thickness measurement accuracy and to determine geometrical, microstructural and physical properties of the object.
Patent
Phased array ultrasonic inspection method for industrial applications
Thomas James Batzinger,Wei Li,Robert Snee Gilmore,Edward James Nieters,William Thomas Hatfield,Richard Eugene Klaassen,James Norman Barshinger,Bruno Hans Haider,Carl L. Chalek,Robert John Mcelligott,David Charles Franklin +10 more
TL;DR: In this article, a single-turn inspection of an ultrasonic transmission beam is performed by exciting a number of transducers forming an array to produce an ultrasound transmission beam focused into the component.
Patent
Optical interferometric reception of ultrasonic energy
TL;DR: In this paper, the use of a laser beam and an interferometer of the confocal Fabry-Perot type was used for noncontact reception of ultrasonic waves.
Patent
Underwater laser processing method and apparatus
Kouki Okazaki,Ito Arata,Yuji Sano,Naruhiko Mukai,Nobutada Aoki,Chikara Konagai,Muneyoshi Kikunaga +6 more
TL;DR: An underwater laser processing method is carried out by irradiating a laser beam having a high output, a short pulse and a visible wavelength to improve residual stress of a material of the surface of the structure and remove a crack or a CRUD thereof as discussed by the authors.
Patent
Method and system for processing measurement signals to obtain a value for a physical parameter
TL;DR: In this article, a method and system are disclosed for processing time-varying measurement signals (28) to obtain a value for a physical parameter by extracting frequency information from the signals.