Apparatus and method for detecting defect of press panel

A method for detecting a defect using a press panel defect detection apparatus, the method comprising:

• detecting at least one elastic wave signal emitted from the press panel as a detection target during press work;
• measuring a period as a section in which there are consecutive signals with a greater voltage than a threshold voltage among the at least one detected signals;
• determining that a defect is generated in the press panel when the measured period is greater than a first reference value;
• and
• determining that the press panel is in a normal state when the measured period is smaller than a second reference value which is smaller than the first reference value.

A non-transitory computer readable medium containing program instructions for detecting a defect of a press panel, the computer readable medium comprising:

• program instructions that measure a period as a section in which there are consecutive signals with a greater voltage than a threshold voltage among at least one elastic wave signal emitted from the press panel detected as a detection target during press work;
• program instructions that determine that a defect is generated in the press panel when the measured period is greater than a first reference value;
• and
• program instructions that determine that the press panel is in a normal state when the measured period is smaller than a second reference value which is smaller than the first reference value.