UET Peshawar Publications Site (University of Engineering and Technology, Peshawar)
Not a member yet
629 research outputs found
Sort by
EXPANSIVE SOILS IN PAKISTAN - CASE HISTORIES
No full textExpansive soils occur at some places of Pakistan. This paper describes the problems related to expansive soils discovered at Gomal University, Dera Ismail Khan and Shah Abdul Latif University, Khairpur. On the basis of field and laboratory tests for these two sites, certain corrective measures both for the design and construction of foundations/floors have been suggested
QUANTIFYING THE EFFECTS OF UPASS: A TRANSIT DEMAND MANAGEMENT STRATEGY
No full textTransportation networks remain fixed, in terms of capacity, for long duration of times due to various reasons such as budgeting constraints, availability of land for more lanes. Whereas automobile growth rate increases each year putting more burden on our road networks. Transportation planners have used different strategies to reduce traffic load on road networks such as encouraging the use of public transportation services, carpooling/ sharing, subsidized bus passes. One such measure is Universal bus Pass (UPass) which has been proven to be an effective solution for transit demand management. While focusing on educational institutes across North America, this research quantitatively analyzes the effects of UPass on transit ridership for the first time. In general, an increase of 50% has been observed in transit ridership due to UPass implementation and all the cities where UPass was implemented experienced a positive change in transit ridership trends. The developed models are demonstrated through a case study
TRACTOR TESTING - AN OBJECTIVE APPROACH
No full textNebraska tractor testing code describes in detail how to test the tractor. The data obtained contains implicit meanings as to what the capabilities of a tractor are. This paper deals with the procedure of manipulating the Nebraska tractor test data to obtain meaningful results regarding the performance of tractor and its power unit-Engine
KNOWLEDGE BASE TECHNOLOGIES AS A NEW PARADIGM IN DATA DRIVEN MANUFACTURING SYSTEM
No full textThe maximization of prospects for substantial benefits and projecting the industry to fulfill the competitive needs in globally oriented business environment requires wide-ranging information based decision support system. The knowledge sharing framework requires an extensive research to improve inter-operatiability of cross-functional systems and subsequently provide the basis for diverse utilization of knowledge base technologies in manufacturing. The effective knowledge sharing framework in manufacturing industries is usedto speed-up the New Product Development & Introduction (NPDI) process and improves the effectiveness of information flow in Product Lifecycle Management (PLM) environment. This paper describes the development of Knowledge Base System (KBS) to select process for making circular shapes and explores the manufacturability of the required designed product. The KBS is an expert system, used to select the suitable process and cutting tools by defining the constraint values into the system. The KBS is designed using E2KS, the state of the art software and knowledge capturing techniques. The machining examples are used to demonstrate the implementation of the system and how it will provide a basis for knowledge sharing in PLM environment. The Manufacturing knowledge is captured in order to provide manufacturing consequences
DETERMINISTIC SEISMIC HAZARD ANALYSIS AND SELECTION OF TIME HISTORIES FOR DYNAMIC ANALYSIS FOR A SITE IN SWABI
No full textPakistan lies in one of the most tectonically active regions of the world. The latest destructive 2005 Kashmir earthquake of magnitude 7.6 struck the northern part of Pakistan which caused death toll of about a hundred thousand people and monitory losses of about five billion US dollars. After this earthquake, most of research activities were directed to define earthquake hazard. However, amongst other problems in those studies, one hard decision is the use of attenuation relationship as no such equation is developed for Pakistan. These studies either do not consider the newly developed New Generation Attenuation (NGA) equations or use a single NGA equation. The purpose of this study is to utilize all NGA equations to define seismic hazard in terms of peak horizontal acceleration using Deterministic Seismic Hazard Analysis (DSHA) for a site near Tarbela Dam, Pakistan. The PGAs from all NGAs are weighted to get mean PGA for design. The site of interest, where previously recorded PGA was 0.16g for Kashmir 2005 earthquake-150 Km away from the epicenter, is surrounded by 8 faults. This site has a forty feet high slope inclined at 53° to the horizontal and made of dense gravels with a mixture of silt, clay, and sand. On top and bottom of the slope, boy’s hostels are being built. This necessitates seismic hazard analysis to be evaluated and a suit of acceleration time histories be selected for dynamic analysis of the slope. Three time histories are selected in this study from real earthquakes that matches parameters with the controlling earthquake
SUGGESTED METHODS FOR THE DESIGN OF WASTEWATER SYSTEMS FOR BUILDINGS IN DEVELOPING ENVIRONMENTS
No full textA summary of suggested methods and equations for the design of waste drainage, treatment and disposal systems for buildings in developing countries is presented, bearing in mind the peculiaf circumstances of these countries.
 
Title SOME EXPERIMENTAL INVESTIGATIONS OF MIXED-FLOW EXHAUST TURBOCHARGER TURBINE IN TIME-VARYING INLET CONDITIONS
No full textThe operation of turbochargers under unsteady flow conditions has been actively researched and yet relatively little is knownabout the turbine behaviourand itsability to utilise exhaust energy of the internal combustionengine. This is particularly true of mixed-flow turbines. This paper describes the details of pulse operation of a mixed-flow turbine and provides new insights intothe behaviour of such configuration undertime-varying inlet conditions.A constant blade angle mixed-flow rotor1 was used in a single-entry nozzleless turbine and tested under steady and unsteady conditions. The unsteady results were obtained over a reduced turbine operating speed range and two engine representative frequencies. The unsteady mass flow parameter and efficiency results of this mixed-flow turbine showed that the curves substantially deviated from the steady curves. These testify that the quasi-steady assumption normally used in the performance assessment of turbines could be inadequate for the detailed measurement of the pulse operation of an automotive turbocharger. Preliminary comparison with a radial-inflow rotor of a similar non-dimensional speed parameter showed relatively higher cycle-mean efficiency with mixed-flow rotor
IRRIGATION APPLICATION EFFICIENCY AND DISTRIBUTION UNIFORMITY AT FIELD LEVEL UNDER CONVENTIONAL IRRIGATION METHODS
No full textResearch was conducted to study the application efficiency and distribution uniformity for the improvement of irrigation water management at Pabbi area of Kabul River Canal during 1994-95. The application efficiency ranged from 39 to 89%. The average application efficiency was 61.5% for the area. The distribution uniformity was found in the range of 47-90%. The application efficiency decreased as both field size and flow rate increased. The two general linear models showed that application efficiencies and distribution uniformities were affected more by flow rates rather than field size. The application efficiency and distribution uniformity were highly correlated
RECOVERY OF TALC FROM TALC- CARBONATE SCHIST OF SWAT EMERALD MINES, NWFP, PAKISTAN
No full textIn present research preliminary investigations like petrographic study, grain size evaluation and chemical analysis were undertaken on talc bearing rock of Swat emerald mines, aiming at finding some suitable processing technique to recover talc. A few processing tests using flotation, gravity separation and leachingmethods were conducted to see the amenability of talc to enrichment by these techniques. Analysis of seven talcum powder products available in the local market including pharmaceutical grade talc was carried out for comparison with Swat raw- talc under study and to know the level of impurities in it. The results revealed that Swat emerald mines talc rock contains calcite, magnesite, dolomite, muscovite and quartz as impurities. Talc content in the original rock ranges from 60 to 65% and possible to liberate at grind size of 45 microns. Flotation test results revealed that talc upgraded to 85% with 80% recovery using frother as a process aid whereas, upgradation using gravity separation was 82%. The flotation concentrate on leaching further improved and the level of impurities reduced from15 to 8 %
Investigation of tribological characteristics of castor oil with mineral oil blends
No full textVegetable oil has been researched to supplant petroleum-based items because of its surroundings well disposed attributes and has turned into a key wellspring of bio-ointments.The usefulness of vegetable oil is its availability as one of the renewable sources. Additionally, the vegetable oils based lubricant has indicated the potentials for reducing carbon dioxide and hydrocarbon emission while operating in internal combustion engines and in industrial process. This paper concentrates on the impact of the mixing proportion of mineral oil with vegetable oil examined on the tribological attributes and four ball tribotester method employing commercial lubrication oil. Castor oil was blended at volumetric ratio ranging from 20 to 80 % with commercial mineral oil. Every trial work fit in with ASTM D4172. The outcomes display that a few mixes of castor oil with commercial lubrication oil have brought down the diameter of wear scar contrasted with mineral oil. Mixes exhibit decreasing coefficient of friction contrasted with lubrication oil. As a result, a few mixes of castor oil with commercial lubricant oil have better tribological execution contrasted with commercial lubricant oil or neat castor oil