Tsuyoshi MIHARA
著者に関連した記事は4件です。
更新情報
第13回
サブハーモニック超音波フェーズドアレイによる閉じたき裂サイジング
著者:
小原 良和,Yoshikazu OHARA,菅原 あずさ,Azusa SUGAWARA,山中 一司,Kazushi YAMANAKA,三原 毅,Tsuyoshi MIHARA
発刊日:
公開日:
キーワードタグ:
closed cracks Crack depth sizing Nondestructive testing Phased-array imaging Subharmonic waves
小原 良和,Yoshikazu OHARA,菅原 あずさ,Azusa SUGAWARA,山中 一司,Kazushi YAMANAKA,三原 毅,Tsuyoshi MIHARA
発刊日:
公開日:
キーワードタグ:
closed cracks Crack depth sizing Nondestructive testing Phased-array imaging Subharmonic waves
Closed cracks can cause the underestimation or overlook by conventional (linear) ultrasonic method, because the ultrasound is transmitted through closed cracks. To solve this problem, we have developed an imaging method, subharmonic phased array for crack evaluation (SPACE), based on subharomonic generation by large-amplitude short-burst-wave input and phased-array imaging algorithm with frequency filtering. Thus far, we have demonstrated in the crack depth measurement in closed fatigue cracks and stress ...
英字タイトル:
Sizing of Closed Cracks Using Subharmonic Phased Array
英字タイトル:
Sizing of Closed Cracks Using Subharmonic Phased Array
論文
ステンレス鋳鋼配管における超音波伝播シミュレーション
著者:
坂本 一信,Kazunobu SAKAMOTO,古川 敬,Takashi FURUKAWA,古村 一朗,Ichiro KOMURA,上山 芳教,Yoshinori KAMIYAMA,三原 毅,Tsuyoshi MIHARA
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CASS Cast austenitic stainless steel modeling Pressurized Water Reactor PWR simulation Ultrasonic testing visualization
坂本 一信,Kazunobu SAKAMOTO,古川 敬,Takashi FURUKAWA,古村 一朗,Ichiro KOMURA,上山 芳教,Yoshinori KAMIYAMA,三原 毅,Tsuyoshi MIHARA
発刊日:
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CASS Cast austenitic stainless steel modeling Pressurized Water Reactor PWR simulation Ultrasonic testing visualization
It is well known that volumetric inspection by ultrasonic testing for cast austenitic stainless steel (CASS) piping, which is extensively used in primary loop of Japanese pressurized water reactors (PWR), is challenging due to unexpected beam skewing, dispersion and attenuation by its coarse and anisotropic crystal structures resulted from manufacturing process. The miss or false calling of the flaws and the deterioration of sizing performance are of great concerns in the ultrasonic testing for the ma...
英字タイトル:
Simulation of Ultrasonic Wave Propagation in Cast Austenitic Stainless Steel Piping
英字タイトル:
Simulation of Ultrasonic Wave Propagation in Cast Austenitic Stainless Steel Piping
第14回
断層変位に対するリスク評価と工学的な対応策 (3)建物・構築物及び土木構造物に対する影響評価
著者:
辻 弘一,Hirokazu TSUJI,美原 義徳,Yoshinori MIHARA,松村 和雄,Kazuo MATSUMURA,谷 和夫,Kazuo TANI,蛯沢 勝三,Katsumi EBISAWA,高田 毅士,Tsuyoshi TAKADA
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キーワードタグ:
best estimate response fault displacement margin evaluation nuclear power plant structure risk evaluation ultimate capacity
辻 弘一,Hirokazu TSUJI,美原 義徳,Yoshinori MIHARA,松村 和雄,Kazuo MATSUMURA,谷 和夫,Kazuo TANI,蛯沢 勝三,Katsumi EBISAWA,高田 毅士,Tsuyoshi TAKADA
発刊日:
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キーワードタグ:
best estimate response fault displacement margin evaluation nuclear power plant structure risk evaluation ultimate capacity
Risk evaluation for nuclear facilities against fault rupture hazards was investigated by the research committee on Risk evaluation method and engineering approach against fault displacements set in Atomic Energy Society of Japan. This paper focuses on the appropriate risk evaluation method for buildings and structures against fault displacements considering risk evaluation concepts, input conditions, analytical methods, acceptance criteria and relevant uncertainties. The flow of evaluation procedure is p...
英字タイトル:
Risk evaluation method for fault displacements by engineering approach (3) Risk evaluation method for structures
英字タイトル:
Risk evaluation method for fault displacements by engineering approach (3) Risk evaluation method for structures
第3回
閉口き裂を映像化する非線形超音波フェーズドアレイの基礎的検討
著者:
Kazushi YAMANAKA,Setsu YAMAMOTO,Yoshikazu OHARA,Tsuyoshi MIHARA
発刊日:
公開日:
キーワードタグ:
crack size measurement fatigue crack nonlinear ultrasound
Kazushi YAMANAKA,Setsu YAMAMOTO,Yoshikazu OHARA,Tsuyoshi MIHARA
発刊日:
公開日:
キーワードタグ:
crack size measurement fatigue crack nonlinear ultrasound
A new method for detection and sizing of closed crack is described which uses transient waveform of subharmonics with half input frequency i n ultrasonic nondestructive evaluation. In analogy to the resonant characteristics of vibration of bubbles in liquids, we formulate an equat ion for resonant excitation of subharmonics at partially closed cracks. The equation has been partially verified by comparison between exper imental and calculated waveforms. An apparatus for imaging closed cracks in critical com...
英字タイトル:
Nonlinear Ultrasonic Imaging Method for Closed Cracks
英字タイトル:
Nonlinear Ultrasonic Imaging Method for Closed Cracks