31. Noninvasive Tracking of Solidification In Casting Using Ultrasound Restricted (Penn State Only) Author: Smith, Caeden Title: Noninvasive Tracking of Solidification In Casting Using Ultrasound Area of Honors: Engineering Science Keywords: Ultrasoundsolidificationwaxcastingnoninvasive File: Login to Download Thesis Supervisors: Andrea P. Arguelles, Thesis SupervisorGary L. Gray, Thesis Honors Advisor