技术说明:从准静态压缩测试中探索老化和新鲜牛皮质骨的声发射特性

IF 2.3 4区 医学 Q3 ENGINEERING, BIOMEDICAL
McKenna Roan , Nick Hudyma , George G.A. Pujalte , Jeff T. Wight
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引用次数: 0

摘要

保存骨标本的方法多种多样,这些方法会影响其材料特性。在准静态压缩测试中使用声发射(AE)监测是评估保存方法影响的一个尚未开发的过程。ae是在突然的局部塑性变形过程中产生的瞬态超声波。收集并评估了新鲜冷冻和煮沸、漂白两种保存方法的AE波形。结果表明,老化试样表现出不同于新鲜试样的声发射特征,包括微裂纹发生时间更早,声发射事件数更高,声发射振幅和能量更大。时效后的试样主要表现为拉伸微裂纹和剪切微裂纹的混合,而新鲜试样主要表现为剪切微裂纹。本研究强调了保存方法对压缩测试骨声发射特性的影响,为了解新鲜和老化标本之间微开裂现象的差异提供了有价值的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Technical note: Exploring acoustic emission characteristics from quasistatic compression testing of aged and fresh bovine cortical bone
Bone specimens are preserved using various methods, which have been shown to influence their material properties. An unexplored process of assessing the influence of preservation methods is using acoustic emission (AE) monitoring during quasistatic compression testing. AEs are transient ultrasonic waves generated during abrupt, localized plastic deformation. AE waveforms were collected and assessed for specimens preserved with two methods: fresh frozen and aged by boiling and bleaching. Results demonstrated that aged specimens exhibit different AE characteristics compared to fresh specimens, including an earlier onset of microcracking, higher AE event counts, and greater AE amplitudes and energies. Aged specimens generally showed a mix of tensile and shear microcracks, while fresh specimens predominantly exhibited shear microcracks. This study highlights the influence of preservation methods on the AE characteristics of bone tested in compression, providing valuable insight into the differences in microcracking phenomena between fresh and aged specimens.
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来源期刊
Medical Engineering & Physics
Medical Engineering & Physics 工程技术-工程:生物医学
CiteScore
4.30
自引率
4.50%
发文量
172
审稿时长
3.0 months
期刊介绍: Medical Engineering & Physics provides a forum for the publication of the latest developments in biomedical engineering, and reflects the essential multidisciplinary nature of the subject. The journal publishes in-depth critical reviews, scientific papers and technical notes. Our focus encompasses the application of the basic principles of physics and engineering to the development of medical devices and technology, with the ultimate aim of producing improvements in the quality of health care.Topics covered include biomechanics, biomaterials, mechanobiology, rehabilitation engineering, biomedical signal processing and medical device development. Medical Engineering & Physics aims to keep both engineers and clinicians abreast of the latest applications of technology to health care.
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