This research aims to use electrical resistance measurements to detect and locate damage in piezoresistive materials like cement and carbon nanotube epoxy resin. Probes are embedded in samples which are then damaged through cracking, drilling or vibration. Resistance readings from the probes before and after damage are used to determine the location and severity of damage without visual inspection. Testing shows that resistance increases with more severe or closer damage. Cylindrical holes cause a greater resistance change than conical shapes. This non-destructive damage detection method could help monitor infrastructure and vehicles for safety issues.