Blade deformation and fragmentation: If subjected to abrupt loading or abnormal heating with the converter, pump and/or turbine blades can be deformed, divided from their hubs and/or annular rings, or could split up into fragments. As described over, impelling losses inside the torque converter decrease performance and produce squander heat. https://trevorggfby.spintheblog.com/34374608/5-simple-techniques-for-torque-converter-clutch