Search Results - "KATAYAMA, SEIJI"

Seam Tracking Monitoring Based on Adaptive Kalman Filter Embedded Elman Neural Network During High-Power Fiber Laser Welding by Xiangdong Gao, Deyong You, Katayama, S.

“…This paper proposes a method of seam tracking monitoring during high-power fiber laser welding. A visual sensor system was employed to capture the infrared…”
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Relationship between spatter formation and dynamic molten pool during high-power deep-penetration laser welding by SHICHUN LI, GENYU CHEN, KATAYAMA, Seiji, YI ZHANG

“…The spatter and the molten pool behavior, which were the important phenomena concerned with the welding quality, were observed and studied by using the…”
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Weld appearance prediction with BP neural network improved by genetic algorithm during disk laser welding by Zhang, Yanxi, Gao, Xiangdong, Katayama, Seiji

“…•The morphology of molten pools is measured by molten-pool-shadows.•Four characteristics of the molten-pool-shadows are defined and extracted.•Principal…”
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Relationship of laser absorption to keyhole behavior in high power fiber laser welding of stainless steel and aluminum alloy by Kawahito, Yousuke, Matsumoto, Naoyuki, Abe, Youhei, Katayama, Seiji

“…This study was undertaken in order to assess absorption of a 10 kW fiber laser beam with tightly focused spot diameter of 200 μm in Type 304 austenitic…”
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Online Monitoring of Welding Status Based on a DBN Model During Laser Welding by Zhang, Yanxi, You, Deyong, Gao, Xiangdong, Katayama, Seiji

“…In this research, an auxiliary illumination visual sensor system, an ultraviolet/visible (UVV) band visual sensor system (with a wavelength less than 780 nm),…”
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Multi-pass laser welding with cut-wire particles of 50 mm thick steel plates by Wahba, Mohamed, Mizutani, Masami, Katayama, Seiji

“…Multi-pass laser welding with filler wire feeding shows significant potential for welding thick plates. However, this method faces challenges due to the need…”
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Evolution behavior of laser welding in hybrid structure between open-cell aluminum foam and solid aluminum shell by Wattanapornphan, Paiboon, Phongphisutthinan, Chakkrist, Suga, Tetsuo, Mizutani, Masami, Katayama, Seiji

“…Hybrid structure between porous core and solid shell can combine lightweight open-cell structure of porous materials with good strength of solid shell. Laser…”
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Neural network of plume and spatter for monitoring high-power disk laser welding by Gao, Xiangdong, Sun, Yan, Katayama, Seiji

“…Using multi-characteristic information fusion based on a BP (back propagation) NN (neural network) of the plume and spatters to monitor the high-power disk…”
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Microstructural evolution and characteristics of weld fusion zone in high speed dissimilar welding of Ti and Al by Lee, Su-Jin, Takahashi, Makoto, Kawahito, Yousuke, Katayama, Seiji

“…The joining or welding of dissimilar metals is one of the effective measures to reduce structures weight of the production or to save rare metals and to save a…”
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Special Issue on Progress in Welding Processes by Katayama, Seiji

“…Welding is one of the most versatile joining methods for constructing products and structures in nearly all industrial fields. Arc has been widely used as a…”
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Improving Fatigue Performance of Laser-Welded 2024-T3 Aluminum Alloy Using Dry Laser Peening by Sano, Tomokazu, Eimura, Takayuki, Hirose, Akio, Kawahito, Yosuke, Katayama, Seiji, Arakawa, Kazuto, Masaki, Kiyotaka, Shiro, Ayumi, Shobu, Takahisa, Sano, Yuji

“…The purpose of the present study was to verify the effectiveness of dry laser peening (DryLP), which is the peening technique without a sacrificial overlay…”
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High-power fiber laser welding and its application to metallic glass Zr55Al10Ni5Cu30 by Kawahito, Yousuke, Terajima, Takeshi, Kimura, Hisamich, Kuroda, Toshio, Nakata, Kazuhiro, Katayama, Seiji, Inoue, Akihisa

“…Fiber laser has been receiving attention due to its advantages of high-power and high-beam quality to produce narrow and deep penetration welds at high-welding…”
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SM-368229, a Novel Selective and Potent Non-steroidal Mineralocorticoid Receptor Antagonist With Strong Urinary Na+ Excretion Activity by Nariai, Tetsuro, Fujita, Katsuya, Mori, Masaya, Katayama, Seiji, Hori, Seiji, Matsui, Kazuki

“…Mineralocorticoid receptor (MR) antagonists, such as spironolactone (SPI) and eplerenone (EPL), are useful for the treatment of hypertension and heart failure…”
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Relationship between melt flows based on three-dimensional X-ray transmission in situ observation and spatter reduction by angle of incidence and defocussing distance in high-power laser welding of stainless steel by Kawahito, Yousuke, Nakada, Kouki, Uemura, Yousuke, Mizutani, Masami, Nishimoto, Kouji, Kawakami, Hiroshi, Katayama, Seiji

“…The objective of this research is to reveal relationship between melt flows and spatter reduction by angle of incidence and defocusing distance in partial…”
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Mechanical property and joining characteristics of laser direct joining of CFRP to polyethylene terephthalate by Jung, Kwang-Woon, Kawahito, Yousuke, Katayama, Seiji

“…This study was performed to investigate the joining possibility and characteristics of the dissimilar joint between carbon fiber reinforced plastics (CFRP) and…”
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The Effect of Plume Generated on the Microstructural Behavior of the Weld Mixed Zone in High-Speed Laser Dissimilar Welding by Lee, Su-Jin, Katayama, Seiji, Kim, Jong-Do, Suh, Jeong

“…Dissimilar laser welding has been researched to combine the excellent anticorrosion and high strength properties of Ti and the low weight and cost of Al…”
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Laser Direct Joining of Glassy Metal Zr55Al10Ni5Cu30 to Engineering Plastic Polyethylene Terephthalate by Kawahito, Yousuke, Niwa, Yusuke, Terajima, Takeshi, Katayama, Seiji

“…Metals and plastics are widely used in industrial applications, and glassy metals are recently receiving a considerable attention in terms of high strength and…”
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The mechanism of penetration increase in A-TIG welding by Zhang, Rui-Hua, Pan, Ji-Luan, Katayama, Seiji

“…The mechanism of the increasing of A-TIG welding penetration is studied by using the activating flux we developed for stainless steel, The effect of fluxon the…”
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Relationships between exploratory eye movement dysfunction and clinical symptoms in schizophrenia by Suzuki, Masahiro, Takahashi, Sakae, Matsushima, Eisuke, Tsunoda, Masahiko, Kurachi, Masayoshi, Okada, Takashi, Hayashi, Takuji, Ishii, Yohei, Morita, Kiichiro, Maeda, Hisao, Katayama, Seiji, Otsuka, Tatsui, Hirayasu, Yoshio, Sekine, Mizuho, Okubo, Yoshiro, Motoshita, Mai, Ohta, Katsuya, Uchiyama, Makoto, Kojima, Takuya

“…Aim:  Many psychophysiological tests have been widely researched in the search for a biological marker of schizophrenia. The exploratory eye movement (EEM)…”
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WPD-PCA-Based Laser Welding Process Monitoring and Defects Diagnosis by Using FNN and SVM by Deyong You, Xiangdong Gao, Katayama, Seiji

“…Recent years have seen increasing attention paid to laser welding monitoring. This paper introduces an innovative approach to perform laser welding process…”
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