发明名称 |
Method for evaluation of density profile in carbon/carbon material and method for production of standard density test block used therein |
摘要 |
Disclosed are a method for evaluating a local density profile in a carbon/carbon material and a method for producing a standard density test block capable of quantitatively evaluating the density profile in the carbon/carbon material, wherein the method for evaluating the density profile includes a first step of preparing a standard density test block to be inserted in the carbon/carbon material, wherein the standard density test block is produced by using the same type of material as the carbon/carbon material and thereafter inserted in the carbon/carbon material, a second step of radiating X-rays onto the carbon/carbon material having the standard density test block inserted so as to obtain and correct computed tomographic image, and a third step of measuring a physical density by use of a linear attenuation coefficient of the computed tomographic image, whereby the local density profile can accurately be evaluated by use of a nondestructive testing and additionally such method can be utilized as an excellent means for improving processes and ensuring quality. |
申请公布号 |
US8989345(B2) |
申请公布日期 |
2015.03.24 |
申请号 |
US201013583431 |
申请日期 |
2010.07.12 |
申请人 |
Agency for Defense Development |
发明人 |
Kim Dong Ryun;Yun Nam Gyun |
分类号 |
G01N23/06;G01N23/083;G01N9/24;G01N23/04;G01N1/28 |
主分类号 |
G01N23/06 |
代理机构 |
Scully, Scott, Murphy & Presser, P.C. |
代理人 |
Scully, Scott, Murphy & Presser, P.C. |
主权项 |
1. A method for evaluating a density profile in a carbon/carbon material, in a method for quantitatively measuring a density profile in a carbon/carbon material, the method comprising:
a first step of preparing a standard density test block to be inserted in the carbon/carbon material, wherein the standard density test block is produced by using the same type of material as the carbon/carbon material and thereafter inserted in the carbon/carbon material; a second step of radiating X-rays onto the carbon/carbon material having the standard density test block inserted so as to obtain and correct computed tomographic image; and a third step of measuring a physical density by use of a linear attenuation coefficient of the computed tomographic image. |
地址 |
Daejeon KR |