Architecture Commons^™

Filters Used For Roundness Error Evaluation: An Experimental Comparison Study, Fatma Elerian

Mansoura Engineering Journal

Filtration is a necessary step in roundness measurement. The type of filter affects value of roundness error. There were many studies that explain the differences between filters theoretically and few of them have studied the differences practically. This study aims at introducing a practical comparison of the following filters (2CR50, 2CR75, 2CRPC50, 2CRPC75, Gaussian and no filter) in order to demonstrate the effect of each on roundness error values. RA-120 ROUNDTEST instrument was used for measuring out of roundness of 25 turned workpieces. Least squares reference circle (LSC), minimum zone reference circle (MZC), maximum inscribed reference circle (MIC) and minimum …

Using Heritage Sites At Bahariya Oasis On The Tourism Urban Development, Medhat Ahmed Shabaan Samra

Mansoura Engineering Journal

Throughout the tourism planning process for the Bahariya Oasis area, the current study aims to prepare this area to become an applicable model that converts the values of cultural heritage resources into economic values within the tourism industry and the establishment of tourism projects in this area. The Bahariya Oasis area is characterized by many Valuable regions that have not been included on the tourism map by the Egyptian government. To achieve those objectives, the researcher adopted the 'Analytic-Descriptive Approach', as it is suitable for this study throughout reviewing the literature related to the research subject, describing the current situation, …

Effect Of Nanogel Windows On The Window-To-Wall Ratio (Wwr) With Reference To Daylighting And Energy Consumption, Fatma Ahmed Elbony

Mansoura Engineering Journal

Electrical lighting accounts for a significant contributor to total electrical energy consumption. Lighting has an energy effect that is not limited to the energy consumption of light fixtures. It also contributes significantly to the building's heat burden. WWR and glazing systems are the most significant factors that affect the electrical lighting and cooling energy consumption of a building. Reduction in WWR means a reduction in solar heat gains and accordingly in cooling energy consumption, otherwise it means increasing in lighting energy consumption. Nanogel windows as highly energy-efficient windows have the greatest potential for improving the thermal performance, daylight, and solar …

Fractional Factorial Treatment Of Ring Spun Yarn Quality., Fawkia El-Habiby, Rizk El-Bealy

Mansoura Engineering Journal

In the present work a study was made about the effect of the following five Parameters yarn linear density , spindle speed, /traveller size, top roller pressure and cradle opening on the quality of ring spun yarn. The experiments were carried out by varying each parameter at two levels using the fractional factorial technique (9). The experimental design treatment with the help of mini-computer programming was used to determine the effect of mean parameters and two factor interactions and interactions between two parameters were carried out by the method of variance analysis.

A Study Of The Diameter And Contraction Of King Spun-Yarns., Ismail Rakha, Rizk El-Bealy

Mansoura Engineering Journal

This paper presents some predicting formulas of yarn diameter and contraction of ring spun yarns. The study concerned the influence of twist multiplier, yarn count and bulk density. Experiments carried out on different cotton yarns to justify the results of the theoretical analysis. The results obtained with these empirical formulas agree satisfactorily with the actual data.

Assessment Of Factors Affecting Dredged Volume Estimation In Hydrographic Survey Applications: Case Study Of New Suez Canal, Ahmed Mohamed Amin, Ahmed Ibrahim Ahmed El-Hattab, Radwa Mohamed Refaat

Mansoura Engineering Journal

An accurate bathymetric survey is a principal issue in dredging projects because it has a direct impact on the estimated dredging quantities, project process and cost. In this research, various factors affecting the accuracy of bathymetric survey and hence dredging volume quantities have been investigated. The data obtained from single-beam echo sounder surveys after the deepening and widening of Great Bitter Lakes in the New Suez Canal project, which was recently carried out in Egypt, have been used.

The ship motion, data density, and processing software are the factors investigated that affect the accuracy of bathymetric survey. The effect of …

Thermal Comfort Of Educational Spaces In Campus Buildings And Its Effect On The Functional Performance Case Study: University Of Garmian In The Kurdistan Region Of Iraq., Chrakhan Hama, Sherief Sheta, Mina Michel Samaan

Mansoura Engineering Journal

The Most important questions about the thermal comfort of educational spaces in campuses and its effect on the functional performance are simple ones. Why this subject important, Developing design standards for university buildings in the region to reach spaces that provide thermal comfort and high functionality, do educational spaces is lack thermal comfort requirements, and what is the effect of thermal comfort on the functionality of university educational buildings? Only by answering these questions can we develop design parameters to achieve the requirements of thermal comfort for education space users. The research about thermal comfort of educational spaces in campuses …

Influence Of The Cleaning Operation On The Quality Of The Yarn., Rizk El-Bealy, Mahmoud Talat

Mansoura Engineering Journal

The object of the present work is to study the influence of the progress of cleaning operation on cleaning action, neps per gram and yarn characteristics. The results of industrial evaluations, using three varieties of Egyptian cotton fibers, To produce ring-spun yarns ranged from carded to combed qualities, are presented. For all cotton fibers, comparison of the processing performance of a three cleaning units with Masterclean concept are favourable to the new cleaning unit (MAC). The modern set alone provides up to 64% cleaning efficiency and lower lint loss at 460 kg/hr production. Also, the results emphasize the high trash …

Spinning Behaviour Of Egyptian Cotton/Waste Blends On Open End Spinning System., S. Ibrahim, Rizk El-Beally

Mansoura Engineering Journal

Long and medium cotton wastes, either individually or blended with lower grades of cotton were blended to produce open-end yarns. The effect of blending ratios of the waste on the properties of produced yarn have been exaimend. Different blowing rooms, single and tandem card, one and two drawing passages were used to process the silvers for open-end yarns. In addition BD 200 Rc and platt sacelowell open-end spinning machines were used. It was found that the waste of long staple Egyptian cotton, containing considerable amount of good fibres is suitable for open-end processing. Blended wastes of long fibres with lower …

End-Breakages Of Carded Ring-Spun Yarns., Rizk El-Bealy, S. Ibrahim, Ismail Rakha

Mansoura Engineering Journal

In the present work, the rate of end-breakages during the spinning of carded yarns 20 Nm up to 50 Nm from Egyptian (Giza 75) cotton fiber have been observed. The phenomenon has been investigated considring the effect of twist, draft, spindle speed, traveller weight and doffing position. The experiments were carried out by varying two-variables at different levels and three-variables using 33 factorial design technique. The results declared that the end-breakage rate was found to be influenced significantly by: twist, draft, spindle speed and doffing position. In addition to the above parameters, the two-factor interaction such as spindle speed with …

Influence Of Egyptian Cotton Fiber Properties And Mechanical Processing On Nep Formation., Rizk El-Bealy

Mansoura Engineering Journal

The aim of the present work is to study the effect of several variables on the ultimate level of neps in card web and ring-spun yarn. The variables choosen include two main factors: fibre properties and mechanical treatment in spinning preparations. The experiments were carried out by running three Egyptian Cotton fibers in the test and varying mechanical processing such as: blowroom stages, doffer and taker-in speeds, trash-master, flats setting and card population "points/in2n . All test treatments were processed into card 40/1 yarn. Under fiber characteristics, micronaire value and fiber buckling coefficient affect significantlt nep formation. Within blowroom process …

Control Of Noils And Fiber Length Parameters In Cotton Combers., R. El-Bealy, M. El-Messiery

Mansoura Engineering Journal

A study was made on the effect of the comber variables, top comb depth, feed length/nip, comber lap weight and setting between detaching rod and nippers on the comber waste and fiber length parameters of combed silver. The experimental design technique (11, 12) with the help of mini-computer programming used in this work to investigate the optimum condition. The results led to the relative importance of factors which affect the noils, 2.5% span length, 50% span length and length . uniformity ratio (UR%).

Performance Of Egyptian Cotton Fibres During Combing Process., Fawkia El-Habiby, Rizk Abdullah El-Bealy

Mansoura Engineering Journal

The aim of the present work is to study the influence of combing ratio on Egyptian cotton fibres trying to find the most suitable combing ratio for these fibres. Comber laps were prepared from G70 and G75 cotton fibres and processed on comber at different combing ratios. The actual combing ratio was determined. It was 11, 11.8. 123, 4, 5, 6.8 and 9.6% for G70 cotton fibre and 11.9 13.8 15.8, 18, and 19.9% for G75 cotton fibre. Fibre length parameters were measured for comber laps, comber sliver and comber noil. Area under fibre length distribution curve was measured for …

Evaluation Of Egyptian Cotton Fibres Characteristics And Their Performance In Spinning Preparations Using "Afis"., Fawkia El-Habiby, Rizk El-Bealy

Mansoura Engineering Journal

In the present study the authors intended to evaluate the performance and properties of different lots of Egyptian cotton fibres using AFIS system. Cottons were processed in different blowroom lines and carding. Fibre properties of raw cotton and card sliver were examined by AFIS system. Analysis of results showed that, for Egyptian cottons, the percentage of seed coat neps to total neps is about 4%. Egyptian cottons contain low nep count, where the majority of cottons corresponded to 5 and 25% of world level according to Uster Statistics, but are characterized by high trash content, since the majority corresponded to …

Retracted: Numerical Modeling Of An L-Shaped Very Stiff Concrete Retaining Wall., A. Badr, Y. Djerbib, S. Elbagalatyo

Mansoura Engineering Journal

A numerical model incorporated in finite element PLAXIS program is presented in this paper to simulate the behavior of an "L-shaped" very stiff reinforced concrete prototype wall. The proposed numerical model has been calibrated and validated experimental results conducted previously at Manchester University. Taking into account the centrifuge model dimensions and geometry with respect to the centrifuge scaling law, the loading conditions and sequences during the test, and by considering for the modeling of the soil the hardening soil model, the numerical results obtained in terms of pattern and magnitude of the wall displacements were very close to the experimentally …

Dynamic Friction Measurements Of Egyptian Cotton Yarns Part 1: Study Of Frictional Behavior Of Two Component Blended Staple Yarns., R. El-Bealy, M. Salama, S. Ibrahim

Mansoura Engineering Journal

In the present work, the dynamic frictional characteristics of Egyptian cotton, Misr polyester and cotton/polyester blended staple yarns were studied. The frictional coefficient of yarns have been determined by wrapping around a cylindrical pin. The electronic F-Meter R 1182 of firm Rotschild zurich was used. The frictional coefficient blended yarns was found to be influenced by fiber constituents, blend proportion, yarn linear density, threadline speed, pretension and angle of contact (loop size).

Dynamic Friction Measurements Of Egyptian Cotton Yarns Part 2: Study Of Frictional Behavior Of Plyed Yarns., M. Salama, R. El-Bealy, S. Ibrahim

Mansoura Engineering Journal

In this work the frictional properties of single and plyed yarns were studied. The yarn coefficient of friction was found to be affected by the sliding speed over guides, yarn count and guide diameter. The method of twisting (ring or two-for-one) was also found to have a substantial influence on the friction behavior of plyed yarns.

The Possibility Of Sustainable Investment By Re-Using Traditional Buildings As A Cultural Tourist Hostel: Case Study, Thurban Palace, Al-Namas Region, Asir Region, Ahmed Ali Bindajam

Mansoura Engineering Journal

Traditional architecture is a mirror that embodies the reality of architectural heritage, as it represents the description of architectural richness, highlighting the most important variables and consistent with functional solutions that take into account the climatic, social and environmental factors that meet the needs of society, its traditions and customs. The urban development and the economic renaissance in the Kingdom of Saudi Arabia witnessed an economic prosperity and this development and renaissance was accompanied by the migration of many villages and neighborhoods and thus formed a case from the beginning of the architectural and urban deterioration of these traditional and …

Modeling Of Turbulent Drag Reducing Fluid Flow, Mohamed Samir Fouda, Mohamed M. Awad, Lotfy H. Rabie

Mansoura Engineering Journal

In the present study, a standard eddy viscosity turbulence model for Newtonian fluids has been developed to predict the drag reduction and the mean velocity profile of drag reducing fluids. In addition, this model is an extension of FENE-P eddy viscosity model for viscoelastic fluids without using any additional constitutive equation.

In this paper, the first section is concerned with developing a new correlation for the eddy viscosity equation, which depends on the flow and rheological parameters, based on the Direct Numerical Simulation (DNS) data. For this purpose, a User Defined Function (UDF) was interpreted to Fluent 16.1 solver to …

Mobile Flume For Inverted Semicircular Open Channel., Hoda Matter Abo Elmaaty, Mossaad Bayoumi Khadr, Ibrahim Mohamed Rashwan

Mansoura Engineering Journal

The discharge measurement is significant in wide engineering applications such as water conveyance, sewer system, irrigation, and drainage system. Many devices are designed to measure discharge in partially filled circular and semicircular channels. In this study new semicircular mobile flume depends on the concept of developing a contracted zone to have a control section was examined. The contraction was made by installing a vertical pipe with axial holes at the semicircular open channel to create critical flow. To evaluate the efficiency of this type of devices mathematical and experimental studies were presented. Specific energy, discharge, and Froude number equations were …

Finite Element Simulation Of Metal Cutting Of Aluminum Using Johnson-Cook Damage Model And Shear Failure Model., Mohammed Saber

Mansoura Engineering Journal

This paper evaluates the use of the Johnson-Cook (J-C) damage model and the shear failure model in the Finite Element metal cutting simulations of an Aluminum alloy (Al 1100) using an FE commercial package ABAQUS. For the J-C model, the damage evolution in the model is controlled by the value of the parameter "equivalent plastic displacement at failure", . The value of this parameter is provided to ABAQUS by user. It was found that the value of that parameter, in conjunction with mesh size, highly affects the chip morphology, chip ratio and analysis completion. Therefore, a compromising between the value …

A Study Of The Plied Yarn Twist Factor., Ismail Mousa Rakha, Rizk El-Bealy, M. El-Messiry

Mansoura Engineering Journal

This paper presents a new formula of twist multiplier for plied yarns. The study concerned the influence of several parameters such as: Fiber parameters, the bottom twist, single yarn liear density of plies. The experiments carried out on Ring-Spun plied cotton yarns and theoretical analysis based on the idealized yarn structure. The results obtained with predicted formula show a constant twist multiplier for all plied yarns.

Statistcal Analysis Of Some Parameteres Of Sliver Preparation On It`S Quality, Rizk El-Bealy Associ.Prof

Mansoura Engineering Journal

In the present work, the experimental design technique was used to study the influence of some variables at the processing prior to spinning on the variation of card sliver quality. The variables considerd to be affecting the card sliver quality are as follow: blowroom lines/chute feed arrangement, carding machines were used throughout, days of production and cotton fibers. A statistical analysis were made of the sliver parameters, its size, count variations neps per gram and sliver irregularity, using three factor analysis of variance. The results declared that the chosen variables and interactions had a large influence on the sliver quality …