IBSim Virtual Test Benchmark Data - Experiment Type: Thermal (LFA), SampleID: LFA_Rd0t00_A03, Data: XCT

Sample ID: LFA_Rd0t00_A03 X-ray tomography (CT) image data of a Ti6Al4V disc. The 3D image was generated with an X-ray tomography scan performed by Dr Llion Evans with Swansea University, Advanced Imaging of Materials (AIM) equipment. The dataset includes: raw radiographs; scan & reconstruction parameter settings file; reconstructed 3D volume. To visualise the 3D volume use software such as ImageJ (https://imagej.net/Fiji/Downloads). The volume image data (.raw file) is in binary format and has the following characteristics: 1920 x 1920 x 1536; 16-bit; little-endian byte order. This data is part of a 'virtual testing' benchmark study, where samples are tested physically in the lab and their microscale accurate digital equivalent are tested virtually through simulation. The technique of converting 3D volumetric images directly into finite element method (FEM) meshes is part of the Image-Based Simulation (IBSim) approach. This data is part of a batch of samples for thermal testing via laser flash analysis (LFA), following the standards ASTM E1461 / ASTM E2585. As part of the study, controlled defects were introduced into the samples. This was achieved by machining a disc shaped recess (of defined diameter and depth) into one disc which is bonded onto another disc, so that the defect is located internally within the final sample. The samples in the batch are named as follows. Sample ID Diameter Thickness Recess d Recess t LFA_RNA_### 12.6 2.5 N/A N/A LFA_Rd0t00_### 12.6 1.25 x 2 N/A N/A LFA_Rd8t02_### 12.6 1.25 x 2 8.0 0.2 LFA_Rd8t08_### 12.6 1.25 x 2 8.0 0.8 LFA_Rd6t02_### 12.6 1.25 x 2 6.0 0.2 LFA_Rd6t08_### 12.6 1.25 x 2 6.0 0.8 LFA_Rd4t02_### 12.6 1.25 x 2 4.0 0.2 LFA_Rd4t08_### 12.6 1.25 x 2 4.0 0.8 Where ### denotes the furnace bonding batch (A-C and N for no bonding cycle) and sample number (01-30). Values in mm.

样本编号：LFA_Rd0t00_A03，对应Ti6Al4V钛合金圆盘的X射线断层扫描（X-ray tomography，即CT）图像数据。该三维图像由斯旺西大学材料先进成像（Advanced Imaging of Materials, AIM）设备平台的Llion Evans博士通过X射线断层扫描采集生成。

本数据集包含以下内容：原始投影图像、扫描与重建参数配置文件、重建后的三维体数据。可使用ImageJ（https://imagej.net/Fiji/Downloads）等软件对该三维体数据进行可视化。

该体图像数据（.raw文件）为二进制格式，参数如下：分辨率1920×1920×1536、位深16位、小端字节序（little-endian）。

本数据属于“虚拟测试”基准研究的一部分：该研究中，试样先在实验室开展物理测试，同时其微观精度的数字等效模型将通过仿真开展虚拟测试。将三维体图像直接转换为有限元法（finite element method, FEM）网格的技术，属于基于图像的仿真（Image-Based Simulation, IBSim）方法的核心环节之一。

本数据属于一批采用激光闪射分析法（laser flash analysis, LFA）开展热性能测试的试样数据集，测试遵循ASTM E1461与ASTM E2585标准。

本研究在试样内部引入了可控缺陷：具体实现方式为，在一块圆盘上加工出指定直径与深度的圆盘形凹槽，再将该圆盘与另一块圆盘粘接，最终使缺陷位于成品试样的内部。

该批次试样的命名规则如下：
| 样本编号 | 直径/mm | 厚度/mm | 凹槽直径/mm | 凹槽深度/mm |
|------------------|---------|----------|-------------|-------------|
| LFA_RNA_### | 12.6 | 2.5 | N/A | N/A |
| LFA_Rd0t00_### | 12.6 | 1.25×2 | N/A | N/A |
| LFA_Rd8t02_### | 12.6 | 1.25×2 | 8.0 | 0.2 |
| LFA_Rd8t08_### | 12.6 | 1.25×2 | 8.0 | 0.8 |
| LFA_Rd6t02_### | 12.6 | 1.25×2 | 6.0 | 0.2 |
| LFA_Rd6t08_### | 12.6 | 1.25×2 | 6.0 | 0.8 |
| LFA_Rd4t02_### | 12.6 | 1.25×2 | 4.0 | 0.2 |
| LFA_Rd4t08_### | 12.6 | 1.25×2 | 4.0 | 0.8 |

其中###代表炉内粘接批次（A~C，N代表无粘接循环）与试样编号（01~30），所有尺寸单位均为毫米。