Fig. 1 Schematic of preparing the massive SiCf/TC17 composite ring

Fig. 2 Geometric dimensions of the cruciform specimen

Fig. 3 Schematic of the cruciform specimen

Fig. 4 Cruciform specimen and experimental setups: a cruciform specimen, b extensometer and chamber, c acoustic emission probe, d testing machine

Fig. 5 Multiscale analysis method for cruciform specimen under tensile loading

Fig. 6 Multiscale finite element models: a 1/2 3D macro-model, b 1/4 3D meso-model

Fig. 7 Time-force-AE amplitude curves of tensile testing

Fig. 8 SEM observation positions of the specimen

Fig. 9 Fracture surfaces of specimen: a macromorphology, b second crack, c first crack, d micromorphology of interface debonding, e micromorphology of matrix crack

Fig. 10 Fractography of the first crack: a densely fractured region, b fiber fracture, c matrix fracture

Fig. 11 Section surface morphologies along the fiber direction of the first crack: a cracks of section surface, b matrix crack, c matrix crack, d interface crack

Fig. 12 Section surface morphologies perpendicular to the fiber direction of the second crack: a cracks of section surface, b partial enlargement of cracks, c cracks of interface and matrix, d cracks of section surface, e partial enlargement of cracks, f cracks of interface and matrix

Fig. 13 EBSD analysis positions of the specimen: a as-prepared specimen, b post-experiment specimen

Fig. 14 Phase and KAM distribution: a phase distribution in region I, b KAM distribution of α phase in region I, c KAM distribution of β phase in region I,0 d phase distribution of region II, e KAM distribution of α phase in region II, f KAM distribution of β phase in region II, g phase distribution of region III, h KAM distribution of α phase in region III, i KAM distribution of β phase in region III

Fig. 15 Stress-displacement curve of the macro-simulation

Fig. 16 Damage and failure process of the macro-simulation: a damage initiation, b damage concentration, c damage propagation, d first crack, e second crack, f cladding plastic deformation

Fig. 17 Stress-displacement curve of the meso-simulation

Fig. 18 Damage and failure process of the meso-simulation: a interface damage, b propagation of interface damage, c interface debonding, d matrix plastic deformation, e propagation of matrix plastic deformation, f combination of interface debonding and matrix plastic deformation

Fig. 19 Stress-strain curves of test and macro-simulation

Fig. 20 Failure process of the cruciform specimen under transverse tensile load