Data processing is the first and foremost step for the whole project. During the process, ANU micron-CT machine and Supercomputer Mango system will be used to finsih the task. The data process will be run in twice scan and once date matching. First of all, the pottery will be scanned by a high resolution helical-CT with 1 um minimum voxel size. The CT machine will 'cut' sample into one-by-one slices like left figure. Each point in the cube will have four features including position value(x,y,z) and a specific value(c) representing its material. The record data is around 10 GB including the outside shape and inside feature with job id, Project, and service units will be sent into Mango system stored as the first scan.
'Box' is a special designed cube which is made by 3d printer. The box is made up of four main parts(3 holders and 1 container). The most important part is transparent container in the middle used for placing pottery sherd. The shape of container is based on the shape of sherd but 20% larger. There are also some flexible supporter to support the sherd if it is put in.
Clamp is used to fix the box on platform for sampling process. Since there is no need to fix the pottery sherd on the platform directly any more, the design of fixture gets much easier. The L-Shaped iron can meet the task of fixing box on the platform.
Drill used for sampling is different from ordinary solid twist drills but more close to one used for oil well production. The front of the drill adopts serrated structure. This kind of structure is suitable for breaking samples into small pieces. The middle of the drill is hollow which can be used as a pipe to pump liquid carbon and pieces into the rear pipeline. To realize this function, a 2mm hole saw cutter from Drillpro is chosen. The hole saw cutter is made of high speed steel metal and provide sharp jagged edge which meets all task requirements. Except choosing brand, the work of the drill can be divided into three parts. The first one is to breaking the clay into smaller ones. The second one is using the beside sprayer to inject liquid carbon. The third one is to pump the small pieces and liquid carbon into the pipeline through the drill.
The collection system is made of pump machine, pipeline and shelf. The whole structure is shown as right figure. The collection system will start working when drill sampling. The linear motor will drive the sprayer forward when drill goes down. The target can be easily found according to the timeline of drilling process. The pump machine is responsible for providing negative pressure so that the liquid carbon and small pieces can go through the pipeline and arrive the end sprayer.
The cleaning system is realied on the liquid carbon and pipleline made of FEP. The feature of FEP decides that it can avoid electrostatic adhesion effect.The liquid carbon means there will be no liquid left in the pipeline. If the system needs to be cleaning, the liquid can be directly injected into the drill to clean the whole system.