Analyse a crack-evolution sequence 裂纹演化序列分析
Upload the frames of one test (several images) or a short video. Every frame is segmented in your browser. The page subtracts what is already visible at the start (pen marks, pores, edges, old cracks), draws the growth of new cracks and marks the key frames. With the failure time and the loading duration of a force- or stress-controlled test it also gives the stress level of every event. 上传一个试验的多帧图片或视频,浏览器内逐帧分割;扣除初始状态(记号笔痕、孔洞、边缘、原有裂纹)后给出新生裂纹的增长曲线和关键帧;若填写破坏时刻与加载时长(力或应力控制试验),还给出各事件对应的应力水平。数据不会上传。
按文件名排序
仅用于多帧图片
mp4/webm;HEVC 的 .mov 在部分浏览器无法解码
视频均匀抽取
缩小更快,但细裂纹会丢失
只统计基线之后新出现的裂纹
应在可见开裂之前,如加载前 20 %
之后的帧不计入事件
强度 ÷ 应力速率,或峰值荷载 ÷ 加载速率;σ/σc = 1 − (tf − t)/T
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