当前位置: X-MOL 学术J. Mech. Behav. Biomed. Mater. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A new perspective on mechanical characterisation of Arabidopsis stems through vibration tests.
Journal of the Mechanical Behavior of Biomedical Materials ( IF 3.9 ) Pub Date : 2020-08-21 , DOI: 10.1016/j.jmbbm.2020.104041
Oleksandr Zhdanov 1 , Michael R Blatt 2 , Andrea Cammarano 3 , Hossein Zare-Behtash 3 , Angela Busse 3
Affiliation  

The mechanical properties of plants are important for understanding plant biomechanics and for breeding new plants that can survive in challenging environments. Thus, accurate and reliable methods are required for the determination of mechanical properties such as stiffness and Young's modulus of elasticity. Much attention has been paid to the application of static methods to plants, while dynamic methods have received considerably less attention. In the present study, a dynamic forced vibration method for mechanical characterisation of Arabidopsis inflorescence stems was developed and validated against the conventional three-point bending test. Compared to dynamic tests based on free vibration, the current method allows to determine simultaneously more than one natural frequency, thus increasing the overall accuracy of the results. In addition, this method can be applied to the top parts of the stems that are more flexible, and where application of the three-point bending test is often limited. To demonstrate one of the potential applications of this method, it was applied to evaluate the influence of turgor pressure on the mechanical properties of Arabidopsis stems. Overall, the new dynamic testing approach has been shown to provide reliable data for the local mechanical properties along the Arabidopsis inflorescence stem.



中文翻译:

拟南芥机械特性的新观点来自于振动测试。

植物的机械特性对于理解植物的生物力学和育种可以在恶劣环境下生存的新植物至关重要。因此,需要精确而可靠的方法来确定机械性能,例如刚度和杨氏弹性模量。静态方法在植物上的应用已经引起了很多关注,而动态方法受到的关注却很少。在本研究中,开发了一种用于动态表征拟南芥花序茎机械特性的动态强迫振动方法,并针对常规三点弯曲试验进行了验证。与基于自由振动的动态测试相比,当前方法允许同时确定一个以上的固有频率,从而提高了结果的整体准确性。此外,该方法可以应用于更灵活的茎杆顶部,并且三点弯曲测试的应用通常受到限制。为了证明该方法的潜在应用之一,将其用于评估膨胀压力对拟南芥茎机械性能的影响。总的来说,新的动态测试方法已被证明可以为拟南芥花序茎的局部力学特性提供可靠的数据。

更新日期:2020-08-21
down
wechat
bug