Several manufacturing processes require meticulous monitoring and inspection. For this, an inspection officer with special training is kept on-site to assess machinery performance and detect potential issues. However, several limitations come along with the manual visual inspection. Studies recorded 20% to 30% human errors during visual inspection of specific manufacturing processes.
The human limitation against visual inspection
- The human eye cannot make precise measurements like surface roughness, size, etc.
- One may identify false-positive results, leading to an incorrect diagnosis of a defect that does not exist.