美國國家標準局標準品NIST SRM Standard Bullet 2460-標準子彈

標準品英文名稱:Standard Bullet 2460

標準品中文名稱：標準子彈

標準品品牌：NIST

標準品規格：

標準品貨號：2460

美國國家標準局標準品（NIST）——NIST Standard Reference Materials® (簡稱SRMs ®)是美國國家標準局（NIST）制定的“標準參照樣品（SRM）”，共有1100多種，每種標樣都有美國國家標準局的詳細分析報告和用途說明，這些物品經認證后被作為特定的量度或成分含量，成為校正標準用于測量設備和制作程序、工業生產的品質控制標準，以及實驗對比樣本。

NIST SRM主要從事物理、生物和工程方面的基礎和應用研究，以及測量技術和測試方法方面的研究，提供標準、標準參考數據及有關服務，在國際上享有很高的聲譽。SRM標準參照樣品的適用范圍：（1）幫助開發準確的分析方法，（2）用于校正檢測儀器、質量控制和測定檢出極限，（3）保證檢測方法的可靠性和長久穩定性。

NIST標準品Standard Bullet SRM 2460-美國國家標準局標準品

品牌：NIST
貨號：  SRM 2460
品名：Standard Bullet 

Abstract
The National Institute of Standards and Technology (NIST) Standard Reference Material (SRM) 2460/2461 standard bullets and casings project will provide support to firearms examiners and to the National Integrated Ballistics Information Network (NIBIN) in the United States. The SRM bullet is designed as both a virtual and a physical bullet profile signature standard. The virtual standard is a set of six digitized bullet profile signatures originally traced from six master bullets fired at the Bureau of Alcohol, Tobacco and Firearms (ATF) and the Federal Bureau of Investigation (FBI). By using the virtual signature standard to control the tool path on a numerically controlled diamond turning machine, 40 SRM bullets were produced. A profile signature measurement system was established for the SRM bullets. The profile signature differences are quantified by the maximum of the cross correlation function and by the signature difference between pairs of compared profile signatures measured on different SRM bullets. Initial measurement results showed high reproducibility for both the measurement system and production process of the SRM bullets. A traceability scheme has been proposed to establish the measurement traceability for nationwide bullet signature measurements to NIST, ATF and FBI. Prototype SRM casings have also been developed.

主要產品：建筑、機械、人體蛋白、環境等標準品。