Research Article
Application of Digital Image Correlation to Measurement of Packaging Material Mechanical Properties
Table 2
Comparison of DIC with conventional methods.
| Measurement | Features of DIC | Problems with conventional contact sensors (extensometers, strain gauges, etc.) |
| Operation mode | Noncontact | Contact | Slippage Difficulty in attachment Specimen may damage the sensor due to fracture | Object | All material Large dimensions | Conventional material | Not applicable to special materials and small sample Large samples require a lot of strain gauges | Range | Large range (several millimeters to meters) | Fixed | Easily exceed the range | Environment | High temperature, humidity, speed, and so forth | Normal | May not work in hostile environment | Direction | Any direction in plane, simultaneous multipoint measurement | Single | Need more strain gauges for different directions | Parameter | Displacement, distance, strain, velocity, acceleration, frequency, and so forth. | Single | Different instruments are needed for different parameters |
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