Validation of pneumatic crack detection in hole expansion test - Leonhardt, André*; Haas, Tobias; Kunke, Andreas (IOP Conference Series: Materials Science and Engineering. - IOP Publishing. - 1307. 2024. - 43rd International Deep Drawing Research Group (IDDRG) Conference 2024 12/03/2024 - 15/03/2024 Melbourne, Australia, 2024)