相关实验视频

Updated: Jul 15, 2025

Fabrication of Mechanically Tunable and Bioactive Metal Scaffolds for Biomedical Applications

Fabrication of Mechanically Tunable and Bioactive Metal Scaffolds for Biomedical Applications

Published on: December 8, 2015

增材制造的合金和传统制造的板螺丝结构的生物机械比较

S Polak¹, L Beever¹, A Wade²

¹Tāwharau Ora - School of Veterinary Science, Massey University, Palmerston North, New Zealand.

New Zealand veterinary journal

|September 29, 2023

概括

这项研究发现,增材制造 (AM) 板比传统制造 (CM) 板更强,但在循环疲劳下更快地失效. 在骨科应用中,AM板可能很脆,需要对患者进行仔细的特定选择.

科学领域:

生物机械工程生物机械工程
材料科学材料科学材料科学
整形外科手术整形外科手术

背景情况:

增材制造 (AM) 为患者特定的植入物提供了潜力.
骨科板通常用于骨折固定.
了解AM与传统制造 (CM) 植入物的生物力学特性至关重要.

研究的目的:

为了在生物力学上比较增材制造 (AM) 和传统制造 (CM) 的有限接触板 (LCP).
为了评估AM与CM LCPs的曲刚度,强度和循环疲劳性能.

主要方法:

24个1.5/2.0毫米的LCP构造 (12 AM,12 CM) 经历了四点曲测试.
进行了近静态故障测试和循环疲劳测试.
曲刚度,强度和疲劳寿命被确定并进行比较.

主要成果:

在AM和CM构造之间,曲刚度或结构刚度没有显著差异.
在AM结构中,曲强度更高 (3.07Nm与2.57Nm相比).
在CM结构中,疲劳寿命显著延长 (164,272个周期与18,704个周期).

结论:

在单循环测试中,AM整形板更强,但更容易发生疲劳失败.
对于AM板的脆弱性,需要对临床使用进行仔细考虑.
针对患者的AM植入物需要逐个评估,以确保安全性和有效性.

关键词:

这是3D打印的3D打印.添加剂制造的添加剂制造的传统制造的传统制造方式疲劳疲劳疲劳疲劳疲劳疲劳强度强度强度强度强度强度强度强度强度强度强度强度强的是什么的是什么

更多相关视频

An Improved Mechanical Testing Method to Assess Bone-implant Anchorage

An Improved Mechanical Testing Method to Assess Bone-implant Anchorage

Published on: February 10, 2014

An Anesthesia, Surgery, and Harvest Method for the Evaluation of Transpedicular Screws Using an In Vivo Porcine Lumbar Spine Model

An Anesthesia, Surgery, and Harvest Method for the Evaluation of Transpedicular Screws Using an In Vivo Porcine Lumbar Spine Model

Published on: May 31, 2017

相关概念视频

Screw: Problem Solving

Screw: Problem Solving

In mechanical engineering, the interaction between a threaded screw shaft and a plate gear involves analyzing the resisting torque on the plate gear that can be overpowered when a specific torsional moment is applied to the shaft. To better comprehend this concept, consider a generic situation with a threaded screw shaft with a given mean radius and lead and a plate gear with a specified mean radius. The coefficient of static friction between the screw and gear is also provided.
To evaluate the...

Frictional Forces on Screws

Frictional Forces on Screws

Screws are characterized by a helical ridge known as a thread wrapped around a cylindrical shaft. They are commonly used as fasteners to hold objects together or to transmit power and motion in machines. One type of screw that is particularly useful for transmitting power is the square-threaded screw.
A jack with a square-threaded screw is a mechanical device used to lift heavy loads by applying a force at its handle. When the force is applied, the screw turns, raising the load. The screw can...