Temperature spike recorded in Shinkansen undercarriage before crack discovered

In this file photo, the 13th carriage of a JR West N700 series "Nozomi No. 34" bullet train, where a crack and oil leak were discovered, is shown at JR Nagoya Station on Dec. 12, 2017. (Mainichi). The temperature of a Shinkansen bullet train car undercarriage found to be cracked rose by 10 degrees …