The Honorable President of the University of Technology, Prof. Dr. Ahmed Mohamed Hassan Al-Ghabban, granted a letter of thanks and appreciation to each of the professors. Visions of Haitham Abdel Rahim and m. Marwa Sobhi Atallah, two teachers in the Department of Materials Engineering, for their outstanding efforts in completing and publishing two research papers within Scopus containers, according to the book No. 951 u/qq dated 10/23/2022.
First search title
"Verification of the effect of nano additive silica dioxide on
Properties of epoxy resin for use in industrial applications
The Paper has been published in the journal
Materials Science Forum
ISSN: 1662-9752, Vol. 1050, pp 103-113 Trans Tech Publications Ltd, Switzerland Accepted: 08-13-2021
Abstract:
This work aims to evaluate the characteristics of epoxy resins by introducing (1%, 3%, 5%, and 7% wt. nano dioxide silica). Using the "hand lay-up " process, about 125 samples were prepared for conducting tests (Hardness, Tensile strength, Impact, Water Absorption) and analyzing results by (SPSS-Scheff). The addition of 7% nano-silica dioxide particles to epoxy considerably raises the hardness values (85.350+.5150 shore D), according to the hardness results. Statistically, very large variations were observed of hardness, tensile strength, elongation at break, impact strength, and water absorption (Sig 0.01, 0.04, 0.003, 0.02, and 0.002) respectively, and this indicates an improvement in the properties when addition nano-silica dioxide to the epoxy resin.
Second search title
"The wear and tensile properties of polyester resin modified by cut lemon peel particles/carbon fibers"
This research has been published in the journal
Technologies and Materials for Renewable Energy, Environment and Sustainability
AIP Conf. Proc. 2437, 020186-1–020186-13; https://doi.org/10.1063/5.0096317
Abstract:
In this research study, specimens were provided by polyester full with (5% weight fractions) of chopped carbon fibers and (1%,3%, 6%, and 9% weight fractions) of lemon peels particles prepared by Hand lay-up method. To evaluating (S/N) values with variance analysis (ANOVA), Taguchi's experimental design method (L9) was used. From the results of ANOVA the factors (specimen content and load) were most influential affecting the wear process, while the sliding time factor had the least effect on the wear process. The tensile properties results show that adding particles of lemon peels by 9% improved (tensile strength, modulus elasticity, and elongation percentage) values compared to other weight fraction. Presence of lemon peel particles and chopped carbon fiber with the unsaturated polyester resin was positive for both wear and tensile properties.
