書誌事項
- タイトル別名
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- Attenuation and Dispersion Properties of Longitudinal Waves in PMMA Bar over a Wide Range of Frequencies
- コウシュウハスウ リョウイキ ニ オケル PMMAマルボウ ナイ ノ タテナミ ノ ゲンスイ ・ ブンサン トクセイ
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抄録
The use of viscoelastic materials has been increasing in various industries such as automotive and electronic industries because of their excellent impact resistance or damping capability. Precise knowledge of their dynamic properties are needed to further widen the applicability of viscoelastic materials. In the present study, attenuation and the dispersion properties of a polymethyl methacrylate (PMMA) bar were examined using both ultrasonic wave propagation experiments in the higher frequency range of 25 - 200kHz and longitudinal wave propagation experiments in the lower frequency range of up to 15kHz. Since the geometrical dispersion due to three-dimensional deformation was caused by higher frequency components involved in the ultrasonic waves, the three-dimensional wave theory was employed to analyze experimental data of wave propagation. Consequently, it was found that the dynamic properties in the lower frequency range can be identified as a 3-element viscoelastic model based on the elementary one-dimensional wave theory, while those in the higher frequency range must be identified as a 5-element viscoelastic model based on the three-dimensional wave theory.
収録刊行物
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- 実験力学
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実験力学 13 (3), 264-269, 2013
日本実験力学会
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詳細情報 詳細情報について
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- CRID
- 1390282680167586816
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- NII論文ID
- 10031201818
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- NII書誌ID
- AA11822914
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- ISSN
- 18844219
- 13464930
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- NDL書誌ID
- 024933129
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可