A.

1. True

2. True

3. True

4. False (reversibly)

5. False (19th century)

6. False (only the most powerful and autonomous intelligent materials carry internal, fully integrated controllers)

B.

The fusion of advanced materials with the power of information technology is providing designers with a new family of engineered materials and structures. By integrating sensors and actuators within a structural material, so called 'Smart Structures' can operate at the very limits of their performance envelopes and to their structural limits without fear of exceeding either. Categorised as 'sensory' or 'adaptive', 'smart' structures can provide maintenance engineers with a full report on their performance history, as well as the location of defects, whilst also counteracting unwanted or potentially dangerous conditions such as excessive vibration.