Characterization of Contact-Type Defects in Mortar Using a Nonlinear Ultrasonic Method
Second harmonic generation (SHG) is one of the common techniques in the nonlinear ultrasonic test. The contact-type defects play an important role in material damage, which are hard to be detected. The traditional nonlinear parameter β used to evaluate the micro damage in material is derived from th...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8832934 |
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| author | Zhichao Nie Kui Wang Mingjie Zhao Xiao Sun |
| author_facet | Zhichao Nie Kui Wang Mingjie Zhao Xiao Sun |
| author_sort | Zhichao Nie |
| collection | DOAJ |
| description | Second harmonic generation (SHG) is one of the common techniques in the nonlinear ultrasonic test. The contact-type defects play an important role in material damage, which are hard to be detected. The traditional nonlinear parameter β used to evaluate the micro damage in material is derived from the classical stress-strain relation, which is more suitable for the anharmonicity of crystal rather than the contact-type defects. Recently, the theoretical model based on the bilinear stiffness law was derived, and the validity and applicability need to be further studied. For this purpose, by the numerical method, the contact interface in mortar is characterized based on the damage indicator γ. The relation between the excitation voltage and γ is obtained. Moreover, the effects of the crack length and orientation on the damage indicator γ are also obtained. The experimental method is also used to characterize the contact interface in mortar. Combining with the existing work, the results obtained in this article are discussed, and further conclusions can be drawn. The conclusions in this article provide potential of quantitative detection of the contact interface and quality evaluation of bonding layers in materials. |
| format | Article |
| id | doaj-art-7fc7d43f8c184e62878c106eacbd826b |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-7fc7d43f8c184e62878c106eacbd826b2025-02-03T06:46:47ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422020-01-01202010.1155/2020/88329348832934Characterization of Contact-Type Defects in Mortar Using a Nonlinear Ultrasonic MethodZhichao Nie0Kui Wang1Mingjie Zhao2Xiao Sun3Key Laboratory of Hydraulic and Waterway Engineering of Ministry of Education, Chongqing Jiaotong University, Chongqing 400074, ChinaKey Laboratory of Hydraulic and Waterway Engineering of Ministry of Education, Chongqing Jiaotong University, Chongqing 400074, ChinaKey Laboratory of Hydraulic and Waterway Engineering of Ministry of Education, Chongqing Jiaotong University, Chongqing 400074, ChinaSchool of Hydraulic and Ecology Engineering, Nanchang Institute of Technology, Nanchang 330099, ChinaSecond harmonic generation (SHG) is one of the common techniques in the nonlinear ultrasonic test. The contact-type defects play an important role in material damage, which are hard to be detected. The traditional nonlinear parameter β used to evaluate the micro damage in material is derived from the classical stress-strain relation, which is more suitable for the anharmonicity of crystal rather than the contact-type defects. Recently, the theoretical model based on the bilinear stiffness law was derived, and the validity and applicability need to be further studied. For this purpose, by the numerical method, the contact interface in mortar is characterized based on the damage indicator γ. The relation between the excitation voltage and γ is obtained. Moreover, the effects of the crack length and orientation on the damage indicator γ are also obtained. The experimental method is also used to characterize the contact interface in mortar. Combining with the existing work, the results obtained in this article are discussed, and further conclusions can be drawn. The conclusions in this article provide potential of quantitative detection of the contact interface and quality evaluation of bonding layers in materials.http://dx.doi.org/10.1155/2020/8832934 |
| spellingShingle | Zhichao Nie Kui Wang Mingjie Zhao Xiao Sun Characterization of Contact-Type Defects in Mortar Using a Nonlinear Ultrasonic Method Advances in Materials Science and Engineering |
| title | Characterization of Contact-Type Defects in Mortar Using a Nonlinear Ultrasonic Method |
| title_full | Characterization of Contact-Type Defects in Mortar Using a Nonlinear Ultrasonic Method |
| title_fullStr | Characterization of Contact-Type Defects in Mortar Using a Nonlinear Ultrasonic Method |
| title_full_unstemmed | Characterization of Contact-Type Defects in Mortar Using a Nonlinear Ultrasonic Method |
| title_short | Characterization of Contact-Type Defects in Mortar Using a Nonlinear Ultrasonic Method |
| title_sort | characterization of contact type defects in mortar using a nonlinear ultrasonic method |
| url | http://dx.doi.org/10.1155/2020/8832934 |
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