Standard testing methods for checking how materials behave under pressure, like tensile testing and hardness tests, have some important downsides:

1. What They Test:

   • Tensile tests look at how stretchy and strong a material is at normal temperatures. But they might miss some complicated ways materials can fail.
   • Hardness tests can't show how tiny changes inside the material affect its performance under stress.

2. Testing Conditions:

   • Most tests happen at room temperature. However, about 70% of materials can change when they're in very hot, cold, or harmful environments.

3. Shape and Size Limits:

   • The standard samples used in tests may not really show how materials perform in real life. Around 30% of engineering failures happen because the shapes or sizes weren't taken into account during testing.

4. Speed of Stress:

   • Most standard tests don't think about how quickly the stress is applied. This is really important for situations where materials experience fast pressure. It can affect up to 25% of how well a material can resist impact.

By knowing these limitations, we can find better ways to test and understand materials more accurately.