1. Keywords: fractography, brittle material, failure mode, model rock.

2. In this paper, ultrasonic fractography method is used to test several types of PMMA specimens.

3. LME of impact fracture were measured. Fractography of instrumented impact were analyzed by SEM.

4. The fractography of this steel changes from dimple fracture into cleavage fracture and inter - granular rapture.

5. The fractography of the fatigue crack initiation displayed cleavage facet and more second cracks after pre - training.

6. The bending fatigue properties and fractography of normalized tufftrided 45 steel were analyzed.

7. A study on some physical properties on metallization of diamond surface and fractography(), microstructure the relationship between diamond and metal material phase by the JCXA-733 electron probe.

8. The fracture failure reasons of the hand - gear were analyzed by means of stress situation and fractography.

9. The scanning electron microscope ( SEM ) is employed to study sandstone fractography under thermo mechanical coupling effects.

10. By means of analyses on macroscopic inspection, chemical composition, mechanical property, microstructure and fractography, the reason of cracking failure of boiler pipes is short-term overheat.