Composite design

Optimum composite material design

— The microstructure identification problem is treated : given certain phases in given volume fractions, how to mix them in aperiodic cell so that the effective material constants of the periodic composite lie the closest possible to certain prescribed values ? The problem is studied for the linear conduction équation. It is stated in terms of optimal con trol theory ; the admissible micro geom...

Cellulose composite structures – by design

بهینه سازی پارامترهای موثر در سنتز نانومیله ها ونانوبلت های tio2 با استفاده از روش central composite design(ccd)

بخش اول نانومیله و نانوبلتtio2 با پیش ماده تیتانیم تترا ایزو پروپوکساید(ttip) و به روش سل – ژل سنتز شدند. پارامترهای موثر بر این روش که عبارتند ازدمای محیط واکنش، عامل سورفکتانت، نسبت آب به پیش ماده ی آلکوکسیدی، و ph به روش central composite design بهینه سازی شدند. نقش این فاکتورها به عنوان فاکتورهای موثر بر مورفولوژی نانومیله و نانوبلت tio2و بر اساس تصاویر حاصل از آنالیز sem مطالعه شدند. در ن...

Preliminary Design of a Composite Wing-sail

An Abaqus/Standard FEA based study was carried out to develop a structural format for a wing sail used on a sailing boat, V-39 Albatross. As well as providing a novel structural solution to meet a challenging set of requirements, the study has given the necessary mass properties and stiffness data required to further progress the preliminary design phase of the overall boat. The brief for the b...

Multiscale composite optimization with design guidelines

Composites show two distinctive features that affect the way in which they are optimized. Firstly, manufacturing strongly interacts with structural performance. Secondly, composites can be described at different scales. This article summarizes contributions that address both features. It is shown how design guidelines can be accounted for in laminate blended design through stacking sequence tab...