7 RELIABILITY-BASED DESIGN OPTIMIZATION USING DETERMINISTIC
 OPTIMIZATION AND MULTI-FIDELITY TECHNIQUE .............. ...................80

 Introducti on ................ ....... .. ... ... .. .. .. ........ .........8
 Reliability-Based Design Optimization Using Sequential Deterministic Optimization
 with Probabilistic Sumfciency Factor. ................... ............. .... .. .... ..... .........8
 Reliability-Based Design Optimization Using Multi-Fidelity Technique with
 Probabilistic Sumfciency Factor............... ...............82.
 Beam Design Example ............... ...... ... ........ .....................8
 Reliability-Based Design Optimization Using Sequential Deterministic Optimization
 with Probabilistic Sumfciency Factor. ................. ......... ....... ................... .........8
 Reliability-Based Design Optimization Using Coarse MCS with Probabilistic
 Suffciency Factor ................. ...............87.................
 Summary ................. ...............88.................

8 RELIABILITY-BASED DESIGN OPTIMIZATION OF STIFFENED PANELS
 USING PROBABILISTIC SUFFICIENCY FACTOR ................. ............. .......90

 Introducti on ............... .. ... ... ..... ...............90.......
 Aluminum Isogrid Panel Design Example .............. ...............92....
 Reliability-Based Design Problem Formulation .............. ....................9
 U ncertainti es .................. ... ........ .... ...............94...
 Analysis Response Surface Approximation .............. ...............95....
 Design Response Surfaces............... ...............97
 Optimum Panel Design............... ...............98
 Composite Isogrid Panel Design Example .............. ...............98....
 Deterministic Design ................. .......... .... ...............100....
 Analysis Response Surface Approximation ................ .. .. .......... ...............101
 Reliability-Based Design Optimization Using Sequential Deterministic
 Optimization with Probabilistic Sumfciency Factor .............. ...................103
 Reliability-Based Design Optimization using DIRECT Optimization.....................106
 DIRECT Global Optimization Algorithm ................ .............. .... ............... 106
 Reliability-Based Design Optimization Using Direct Optimization with Safety
 F actor C orrected by Prob abili sti c Sumfici ency Factor ................. ................10 8
 Sum m ary ................. ...............108..............

APPENDIX

A MATERIAL PROPERTIES OF IM600/133 ................. .............................110

B CONTOUR PLOTS OF THREE DESIGN RESPONSE SURFACE
 APPROXIMATIONS AND TEST POINTS ALONG THE CURVE OF TARGET
 RELIABILITY ................. ...............113......... ......

LIST OF REFERENCES ................. ...............115................

BIOGRAPHICAL SKETCH ................. ...............120......... ......