TY - GEN AU - Lucon, Enrico AU - Santoyo, Raymond L. C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2016-08-01 04:08:00 DO - https://doi.org/10.6028/NIST.IR.8145 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2016 TI - A Comparative Analysis of NIST Charpy Machines and Internal Reference Materials: ER -