B. Riccardi et al./Fusion Engineering and Design 51-52(2000)11-22 DETAIL C二 Fig. 2. TAURO blanket exploded view the plane and 110 MPa for the stresses through cific component with fibre architecture. The most the thickness. The thermo-mechanical analysis has widely studied and used fibre are the been performed by using the above new criteria NICALONTM and an elastic behavioural model for the com Since the beginning of 1990s the SEP Division posite. A behavioural model capable of simulating of SNECMA has been involved with the manu- the non linear stress-strain relationship and of facturing of Sic/Sic composites for fusion power predicting the damage status of the composite is reactors [ll]. A standard 2-D composite named under development [9]. Moreover the data used CERASEP N2-1 was used to carry out the initial for the design calculation are related to the sep evaluation work at the start of the European CERASEP N3-I with the further assumption of programme and demonstrate the an improved thermal conductivity in the thickness such material. One of the characteristics of this direction(15W mK ) The calculated maxi- particular SiC/SiC composite was its two dimen- mum shear in the joints between the sub module sional strengthening feature, achieved using a fab- side wall and bottom cup is 60 MPa: this value is ric of NiCaloN CG fibre (with about 12% the limiting design parameter for the join xygen) and by increasing the density of the pre strength. A recently performed parametric study form by a SiC CVI matrix. Due to the geometric has shown that with a FW-thickness of 3 mm and complexity of the parts making up the TauRo a module height of about 80 cm a FW surface blanket and in order to improve the material's heat flux between 0. 7 and I MW m could be shear related properties, CERASEP N3-1 was tolerated by the tauRo design [10] subsequently developed. This material, also pro- duced with NICaloNTM CG fibres offered an innovative 3-D strengthening feature: the 3. Manufacturing GUIPEX texture. CERASEP N2-1 and N3-1 materials offered fairly similar mechanical and Today's industry has a large installed capa hermal properties (Table 1) but the main advan- for full scale production of Sic SiC comp tages of the 3-D material are as follows: improved parts. Moreover the industry is capable of thermal conductivity in the Z direction, increased neerability' of such materials by optimising a spe and more consistent interlaminar shear failure14 B. Riccardi et al. / Fusion Engineering and Design 51–52 (2000) 11–22 Fig. 2. TAURO blanket exploded view. the plane and 110 MPa for the stresses through the thickness. The thermo-mechanical analysis has been performed by using the above new criteria and an elastic behavioural model for the com￾posite. A behavioural model capable of simulating the non linear stress–strain relationship and of predicting the damage status of the composite is under development [9]. Moreover the data used for the design calculation are related to the SEP CERASEP® N3-1 with the further assumption of an improved thermal conductivity in the thickness direction (15 W m−1 K−1 ). The calculated maxi￾mum shear in the joints between the sub module side wall and bottom cup is 60 MPa: this value is the limiting design parameter for the joint strength. A recently performed parametric study has shown that with a FW-thickness of 3 mm and a module height of about 80 cm a FW surface heat flux between 0.7 and 1 MW m−2 could be tolerated by the TAURO design [10]. 3. Manufacturing Today’s industry has a large installed capacity for full scale production of SiCf /SiC composites parts. Moreover the industry is capable of ‘engi￾neerability’ of such materials by optimising a spe￾cific component with fibre architecture. The most widely studied and used fibre are the NICALON™. Since the beginning of 1990s the SEP Division of SNECMA has been involved with the manu￾facturing of SiC/SiC composites for fusion power reactors [11]. A standard 2-D composite named CERASEP® N2-1 was used to carry out the initial evaluation work at the start of the European programme and demonstrate the capability of such material. One of the characteristics of this particular SiC/SiC composite was its two dimen￾sional strengthening feature, achieved using a fab￾ric of NICALON™ CG fibre (with about 12% oxygen) and by increasing the density of the pre￾form by a SiC CVI matrix. Due to the geometric complexity of the parts making up the TAURO blanket and in order to improve the material’s shear related properties, CERASEP® N3-1 was subsequently developed. This material, also pro￾duced with NICALON™ CG fibres, offered an innovative 3-D strengthening feature: the GUIPEX® texture. CERASEP® N2-1 and N3-1 materials offered fairly similar mechanical and thermal properties (Table 1) but the main advan￾tages of the 3-D material are as follows: improved thermal conductivity in the Z direction, increased and more consistent interlaminar shear failure