THE DESIGN AND ANALYSIS OF EXPERIMENTS. By Oscar Kempthorne. New York, John Wiley and Sons, Inc., 1952. 631 pp. $8.50. This book by a teacher of statistics (as well as a consultant for \"experimenters\") is a comprehensive study of the philosophical background for the statistical design of experiment. It is necessary to have some facility with algebraic notation and manipulation to be able to use the volume intelligently. The problems are presented from the theoretical point of view, without such practical examples as would be helpful for those not acquainted with mathematics. The mathematical justification for the techniques is given. As a somewhat advanced treatment of the design and analysis of experiments, this volume will be interesting and helpful for many who approach statistics theoretically as well as practically. With emphasis on the \"why,\" and with description given broadly, the author relates the subject matter to the general theory of statistics and to the general problem of experimental inference. MARGARET J. ROBERTSON

The Design and Analysis of Experiments

Increasing scientific interest has occurred concerning the utilization of natural fiber-enhanced hybrid composites that incorporate one or more types of natural enhancement. Annual natural fiber production is estimated to be 1,783,965 × 103 tons/year. Extensive studies have been conducted in the domains of natural/synthetic as well as natural/natural hybrid composites. As synthetic fibers have better rigidity and strength than natural fibers, natural/synthetic hybrid composites have superior qualities via hybridization compared to natural composites in fibers. In general, natural fiber compounds have lower characteristics, limiting the use of natural composites reinforced by fiber. Significant effort was spent in enhancing the mechanical characteristics of this group of materials to increase their strengths and applications, especially via the hybridization process, by manipulating the characteristics of fiber-reinforced composite materials. Current studies concentrate on enhancing the understanding of natural fiber-matrix adhesion, enhancing processing methods, and natural fiber compatibility. The optimal and resilient conceptions have also been addressed due to the inherently more significant variabilities. Moreover, much research has tackled natural fiber reinforced hybrid composite costs. In addition, this review article aims to offer a review of the variables that lead to the mechanical and structural failure of natural fiber reinforced polymer composites, as well as an overview of the details and costings of the composites.

Critical Review of Natural Fiber Reinforced Hybrid Composites: Processing, Properties, Applications and Cost

State-of-the-art review on recent advances in polymer engineering: modeling and optimization through response surface methodology approach

Evaluation of the effect of nanomaterials and fibers on the mechanical behavior of polymer-based nanocomposites using Box–Behnken response surface methodology

Static analysis of corrugated lattice-core sandwich panels using VAM-based model

Experimental assessment of mechanical behavior of basalt/graphene/PP-g-MA-reinforced polymer nanocomposites by response surface methodology

In this study, the flexural strength and elastic modulus of polypropylene-based nanocomposites reinforced with graphene nanosheets, basalt, and kenaf fiber were investigated. Response surface methodology based on Box–Behnken design was used as the experimental design. The blends fabricated in three levels of parameters include 0, 0.75, and 1.5 wt% graphene nanosheets, 0, 7.5, and 15 wt% basalt fibers, and 0, 7.5, and 15 wt% kenaf, prepared by an internal mixer and a hot press machine. The fiber length was 5 mm and was being constant for all samples. Flexural and tensile tests were conducted to determine the blend properties. The addition of graphene nanosheets to 0.75 wt% increased the flexural strength by 12% and a graphene addition up to 1.5 wt% reduced flexural strength by 6%. The addition of graphene nanosheets to 1.5 wt% increased the elastic modulus by 37%. The addition of basalt fiber up to 15 wt% increased the flexural strength and elastic modulus by 13% and 61%, respectively. The addition of kenaf fiber up to 15 wt% increased the flexural strength by 18% and the elastic modulus by 46%. Finally, samples were studied by field emission scanning electron microscopy to check the dispersion of graphene nanosheets, basalt, and kenaf fibers in the polymeric matrix.

Experimental analysis of mechanical properties of graphene/kenaf/basalt reinforced hybrid nanocomposites using response surface methodology

In this study, the mechanical properties of polypropylene (PP)-based nanocomposites reinforced with graphene nanosheets, kenaf fiber, and polypropylene-grafted maleic anhydride (PP-g-MA) were inves...

Experimental study on mechanical properties of polypropylene nanocomposites reinforced with a hybrid graphene/PP-g-MA/kenaf fiber by response surface methodology:

Jaber Mirzaei

Papers

Experimental assessment of mechanical behavior of basalt/graphene/PP-g-MA-reinforced polymer nanocomposites by response surface methodology

Experimental analysis of mechanical properties of graphene/kenaf/basalt reinforced hybrid nanocomposites using response surface methodology

Experimental study on mechanical properties of polypropylene nanocomposites reinforced with a hybrid graphene/PP-g-MA/kenaf fiber by response surface methodology:

Evaluation of the effect of nanomaterials and fibers on the mechanical behavior of polymer-based nanocomposites using Box–Behnken response surface methodology

Statistical predicting and optimization of the tensile properties of natural fiber bio-composites