Elastic and fatigue properties of additively manufactured and milled Ti-6Al-4V removable partial denture clasps

This study aimed to investigate the elastic deformation limit and fatigue life of AM Ti64 clasps, analyze the effect of polishing on the elasticity and fatigue life of AM titanium clasps, and compare them with milled Ti64 clasps. The hypothesis of this study was that additively manufactured Ti-6Al-4V clasps exhibit similar elasticity and fatigue properties to machined Ti-6Al-4V clasps. The experimental data included the three-dimensional model of the clasps, tensile test results, surface roughness measurements, clasp elasticity tests, clasp fatigue tests results, as well as scanning electron microscope images of clasp fatigue fracture surfaces and microstructural images. The tensile test data comprised experimental data for 12 samples of two materials, including strain and stress data and the summary. Surface roughness data included measurement data for each sample in four experimental groups, with three measurements taken for each sample and averaged. Clasp elasticity data included the initial length (IL) of each sample before measurement and the length measured after each loading, with the previous loading displacement before significant clasp length change (exceeding 0.1% IL) considered as the clasp's elastic deformation limit. The data from clasp fatigue tests included fatigue life under different displacements from 1.0mm to 0.3mm for four experimental groups (n=5 for each displacement had). The experimental data for each clasp included recorded raw data and data processing, i.e., averaging every 10 loading forces. The number of loadings when the clasp's average loading force decayed to 85% of the initial loading force was considered as the clasp's fatigue life. Due to fluctuations in clasp loading force, the fatigue life corresponding to the last loading force ≥85%ILF was determined as the clasp's fatigue life.

本研究旨在探究增材制造（Additive Manufacturing, AM）Ti-6Al-4V（Ti64）卡环的弹性变形极限与疲劳寿命，分析抛光工艺对增材制造钛合金卡环弹性与疲劳寿命的影响，并将其与铣削加工Ti-6Al-4V（Ti64）卡环进行对比。本研究的假设为：增材制造Ti-6Al-4V（Ti64）卡环的弹性与疲劳性能与铣削加工Ti-6Al-4V（Ti64）卡环相近。
本实验数据集包含卡环三维模型、拉伸试验结果、表面粗糙度测量数据、卡环弹性试验数据、卡环疲劳试验结果，以及卡环疲劳断口扫描电子显微镜图像与微观结构图像。
拉伸试验数据涵盖两种材料共12个试样的实验数据，包含应变、应力数据及汇总结果。
表面粗糙度数据包含4个实验组的全部试样测量数据，每个试样进行3次测量并取平均值。
卡环弹性试验数据包含每个试样测试前的初始长度（Initial Length, IL），以及每次加载后测得的长度；将卡环长度发生显著变化（超过初始长度的0.1%）前的前一次加载位移，定义为该卡环的弹性变形极限。
卡环疲劳试验数据包含4个实验组在1.0mm至0.3mm不同位移下的疲劳寿命，每个位移条件下的试样数量为5个。
每个卡环的实验数据包含记录的原始数据与经处理的数据，即对每10次加载力取平均值。将卡环平均加载力衰减至初始加载力的85%时的加载次数，定义为该卡环的疲劳寿命；考虑到卡环加载力存在波动，将最后一次加载力≥85%初始加载力时对应的加载次数，确定为该卡环的最终疲劳寿命。