Material testing systems including improved component cooling

Abstract

An example material testing machine includes: a first crosshead; a first drive shaft configured to move the first crosshead when actuated; a housing comprising an air inlet and an air outlet; a drive motor within the housing and configured to actuate the first drive shaft; a motor drive circuit configured to provide electrical power to the drive motor; and a motor drive cooling system configured to cool the motor drive circuit, the motor drive cooling system comprising: a cooling fan configured to generate an airflow from the air inlet of the housing to the air outlet of the housing, wherein a total surface area of the air outlet is greater than a total surface area of the air inlet such that an air pressure of the airflow decreases from the air inlet towards the air outlet; a duct configured to direct a path of the airflow between the air inlet and the air outlet; and a heat sink thermally coupled to the motor drive circuit and positioned within the airflow in the duct.

Dependencies are inferred from the claim text.