Patent ID: 9739753
Date: 2017-08-22
CPC Classifications: B30B,G01N

Claim:
1. A method of monitoring or characterizing a multi-component drug tablet during compaction comprising the steps of: transmitting, by a first transducer, a first set of acoustic waves into a multi-component drug tablet while the multi-component drug tablet is being formed in a die during compaction; receiving, by a digitizing oscilloscope, a second set of acoustic waves from said multi-component drug tablet while the multi-component drug tablet is being formed in the die during compaction; analyzing, by the digitizing oscilloscope, data received from said second set of acoustic waves; calculating, by a processor, a resonance frequency and mode shape of said multi-component drug tablet based on said analyzed data; and determining, by the processor, a quality level or a defect state of said multi-component drug tablet based on said calculated resonance frequency and mode shape of said multi-component drug tablet.