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Application of quality engineering techniques in the main domains of industrial engineering

Karimi Gavareshki M.H., Abbasi M., Karbasian M., Rostamkhani R.

Journal of Achievements in Materials and Manufacturing Engineering

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2018

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Vol. 90, nr 1

22--40

EN

Purpose: of this paper is to cover the main domains of industrial engineering based on the statistical and non-statistical techniques related to quality engineering. In this research, in addition to the review of the main domains of industrial engineering and the required specifications of technique, have been tried to present an integrated model of application of these techniques in order to create or increase the total score of productivity and sustainability in related scale with Analytic Hierarchy Process (AHP) approach. Design/methodology/approach: of this paper has been divided in two categories. The method of theoretical research consists of data collection tools, reference books, and several articles of the Iranian Center for Defences Standard. The method of practical research is the assessment of selected statistical and non-statistical techniques related to quality engineering, which have been deployed in the main domains of industrial engineering related to the manufacturing factories that are belonged to the selected industries of the Defence Industries Organization (DIO). Findings: of this paper consist of four main results. The maximum impact of standard statistical techniques in order to cover the main domains of industrial engineering and the required specifications of technique is related to the Statistical Process Control (SPC). Furthermore, the maximum impact of non-statistical techniques in order to cover them, is related to the Quality Function Deployment (QFD). The other results, which can be assessed with details, have shown that the maximum importance of the main domains of industrial engineering is related to the planning and manufacturing control and the maximum importance of the required specifications of technique is related to the mathematical analysis too. The total score of productivity and sustainability in related scale has been achieved to the upper than moderate level. In this research, the identification and determination of important factors, which have influenced on the productivity and sustainability have been done for the first time. The percentage of impact of the quality engineering techniques for both productivity and sustainability in the industrial engineering field is approximate to 70%. Research limitations/implications: of this paper suggest that the application of quality engineering tools including statistical and non-statistical techniques can be generalized to the other engineering or management fields with the same Analytic Hierarchy Process (AHP) or Analytic Network Process (ANP) approach in phase environments. Originality/value: of this paper have been extracted from the managers and experts involved with qualitative issues in the different levels of the Defence Industries Organization (DIO) and the Maham Group. This values are assessed from two aspects. Firstly, the validity of this research was carried out using expert’s opinions (Industrial advisers, Lead auditors of the Iranian center for Defences Standard and university professors). Secondly, all values of the research reliability are acceptable.

2

Experimental study of the flow around two finite square cylinders

Sohankar A., Abbasi M., Nili-Ahmadabadi M., Alam M. M., Zafar F.

Archives of Mechanics

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2018

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Vol. 70, nr 5

457--480

EN

An experimental investigation is conducted on the air flow past two wallmounted finite length side-by-side square cylinders, each of the aspect ratio AR = 7. The cylinder center-to-center spacing ratio T/d is varied from 2 to 6, where d is the side-width of the cylinder. The cylinders are placed at three incidence angles with respect to the freestream velocity, i.e. both cylinders at zero incidence angle (case I), both cylinders at 45° incidence angle (case II), and one cylinder at zero incidence angle with the other at 45° incidence angle (case III). The pressure distributions on the surfaces of the cylinders are measured at Reynolds numbers of 5.9 × 104–8.1 × 104. In addition, the flow structures are visualized in a smoke wind tunnel at the Reynolds number of 2 × 103. Depending on the flow characteristics, four flow structures are identified at the mid-height of the cylinders, namely the asymmetric flow, antiphase shedding flow, leading-edge separated flow and wedge flow. The sectional drag near the bottom is more sensitive to T/d than that near the top. The sectional drag coefficient measured at 0.5d below the mid-span can represent the surface-averaged drag coefficient on the entire cylinder.

3

Experimental and numerical investigation of the effect of the combined mechanism of circumferential expansion and folding on energy absorption parameters

Abolfathi M., Nia A. A., Attar A. A., Abbasi M.

Archives of Civil and Mechanical Engineering

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2018

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Vol. 18, no. 4

1464--1477

EN

In this research, in order to increase energy absorption of thin-walled tubes, a combined deformation mechanism is proposed which involves the simultaneous combination of circumferential expansion and folding. Such a combined mechanism was not concerned in the literature. The study is carried out both experimentally and numerically. A special device was designed and made to conduct experimental tests on tubes. The samples were made of aluminum, and quasi-static loading was applied at two different speeds of 10 and 200 mm/min. Energy absorption parameters including specific energy absorption (SEA), crushing mean force, initial peak force, the deformation mode and crush force efficiency (CFE) were studied. Experimental results showed that combined mechanism (without lubrication) could increase absorbed energy up to 123% compared to the folding mechanism. If the lubricant is used, the increase will be up to 97%. The combined deformation mechanism (without lubrication) increases absorbed energy up to 94% compared to the circumstantial expansion. This value will be 107% with lubrication. In addition, the initial peak force in the combined mechanism decreases between 8% and 36% relative to the folding mechanism. The circumstantial expansion in the proposed mechanism is complete and the expansion stroke length is 100%, while this stroke was less in the previous researches due to design restrictions. Numerical simulations were conducted using LS-Dyna software and there is good agreement between the numerical results and experimental data.

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Synthesis and Characterization of CuO Nanoparticles by the Chemical Liquid Deposition Method and Investigation of Its Catalytic Effect on the Thermal Decomposition of Ammonium Perchlorate

Eslami A., Juibari N. M., Hosseini S. G., Abbasi M.

Central European Journal of Energetic Materials

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2017

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Vol. 14, no. 1

152--168

EN

Copper oxide nanoparticles have been synthesized by the chemical liquid deposition method and characterized by means of X-ray diffraction analysis (XRD), Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The XRD and SEM results showed that the particle size was between 50 nm and 70 nm. Ammonium perchlorate (AP)-CuO nanostructures have been prepared by ex-situ mixing of AP and CuO nanoparticles, while AP/CuO nanocomposites have been obtained by in-situ growth of nano CuO on the surface of AP. The effect of the nanoparticles on the thermal decomposition of AP has been examined by differential scanning calorimetery (DSC) and thermogravimetric analysis (TGA) methods. The results showed that the ex-situ prepared nanoparticles had better catalytic activity than the in-situ prepared ones. The effect of the synthesized nanoparticles on the thermal decomposition of AP in experiments with a AP to CuO ratio of 98:2 was as follows: with the ex-situ prepared experiments, the decomposition temperature decreased from 428 °C to 348 °C and the heat released increased from 344 J·g−1 to 1432 J·g−1, while those with the in-situ prepared samples exhibited 341 °C and 1317 J·g−1, respectively.

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Application of QFD & VE & lean approach for control tests in a product design

Karimi Gavareshki M. H., Abbasi M., Rostamkhani R.

Archives of Materials Science and Engineering

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2017

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Vol. 84, nr 2

65--78

EN

Purpose: of this paper consists of identifying and prioritising control tests of a product design with integrating QFD and VE techniques according to use of the lean approach to increase the productivity of product design. Design/methodology/approach: of this research is the application of four quality houses at QFD (four matrices) and VE matrix and assessment table of lean approach in the form of a combinational process. Findings: of this research were the implementation of mentioned methodology for numerical application. Bullet-head drill (27.8 inch HSD) that was applied in oil and gas industries with 5.69 scores is more than moderate in related to lean of control tests, and it is 7.13 from 9 for average survey results of applied mentioned methodology, and also it is 0.825 for research reliability. Research limitations/implications: of this paper suggest that the wide use of the other non-statistical techniques of quality engineering can be achieved with simple programming in excel and lean approach. Even more advanced topics in fuzzy circumstance can be applied with this methodology. Originality/value: of this research is extracted from three matrices of QFD, one matrix of VE and assessment table of lean approach for prioritising the control tests in product design of bullet-head drill 27.8 inch HSD.

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Orthonormal basis function fuzzy systems for biological wastewater treatment processes modeling

Chaibakhsh A., Chaibakhsh N., Abbasi M., Norouzi A.

Journal of Artificial Intelligence and Soft Computing Research

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2012

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Vol. 2, No. 4

343--356

EN

In this paper, fuzzy models with orthonormal basis functions (OBF) framework are employed for modeling the nonlinear dynamics of biological treatment processes. These models are consisting of a linear part describing the system dynamics (Laguerre filters) followed by a non-linear static part (fuzzy system). The training procedure contains of two main steps: 1) obtaining the optimum time-scale and the order of truncated Laguerre network as the linear part and 2) defining membership functions, corresponding rules and adjusting the consequent parameters of fuzzy system as the nonlinear part. A comparison between the responses of the developed model and the original plant was performed in order to validate the accuracy of the developed model.

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Butyrylcholinesterase Inhibitory C-Glycoside from Symplocos racemosa

Ahmad V., Zubair M., Abbasi M., Kousar F., Rasheed M., Rasool N., Hussain J., Nawaz S., Choudhary M.

Polish Journal of Chemistry

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2006

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Vol. 80, nr 3

403-407

EN

The re-investigation of the chemical constituents of Symplocos racemosa Roxb. led to the isolation of one new C-glycoside, symcososide (1) along with one known compound beta-sito-glycoside (2). The structure of the new compound was determined by 1D and 2Dhomonuclear and heteronuclearNMRspectroscopy, chemical evidences, and by comparison with the published data of the closely related compounds. The glycoside 1 displayed in vitro inhibitory activity against butyrylcholinesterase (BChE) enzyme with IC50 value of 21.2 š 0.01 miM.

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Antioxidant Flavonoids from Pulicaria undulata

Ahmad V., Rasool N., Abbasi M., Rashid M., Kousar F., Zubair M., Ejaz A., Choudhary M., Tareen R.

Polish Journal of Chemistry

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2006

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Vol. 80, nr 5

745-751

EN

The phytochemical investigation of the ethyl acetate soluble fraction of the whole plant of Pulicaria undulata L. (syn. Pulicaria crispa Forssk.) yielded two new flavonoid glycosides, pulicaroside (1) and undulatoside (6) along with four known flavonones (2-5). The structures of the new compounds were identified by 1D and 2D-NMR techniques along with other spectral evidences and by the comparison with the published data of the closely related compounds. All the flavonoids (1-6) exhibited superoxide anion scavenging activity.