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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Non-Intrusive Stress Measurement System ： ウィキペディア英語版 Non-Intrusive Stress Measurement System Non-Intrusive Stress Measurement (System) (NSMS) is a method for determining dynamic blade stresses in rotating turbomachinery. NSMS is also known by the names "Blade Tip Timing" (BTT), "Arrival Time Analysis" (ATA), "Blade Vibration Monitoring" (BVM) ''Beruehrungslose Schaufel Schwingungsmessung'' (BSSM), and "Blade Health Monitoring" (BHM). NSMS uses externally mounted sensors to determine the passing times of turbomachinery blades. The passing times after conversion to deflections, can be used to measure each blade’s vibratory response characteristics such as amplitude/stress, phase, frequency, and damping. Since every blade is measured, stage effects such as flutter, blade mistuning, and nodal diameter can also be characterized.〔(【引用サイトリンク】title=Non-Intrusive Stress Measurement System )〕 The measurement method has been used successfully in all stages of the gas turbine engine (fan, compressor, and turbine) and on other turbo-machinery equipment ranging from turbo chargers to rocket pumps. The ability to apply the technology to a given situation is dependent upon a sensor type that can meet the environmental requirements. ==Method== A set of sensors is used to measure the arrival times of rotating blades. These arrival times, in comparison to a baseline, are used to determine blade deflections. The blade deflections over a number of revolutions and/or across a number of sensors can be used to determine vibratory characteristics. This information, in conjunction with a Finite Element Model (FEM), can then be used to determine the dynamic stresses in a rotating part.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Non-Intrusive Stress Measurement System」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.