Issue · 2016
Vol 35 No 2 (2016)
12 articles · All issues →
ArticlesEXPERIMENTAL INVESTIGATION ON UTILIZATION OF WASTE RUBBER TIRES AS FILLER IN CONCRETE
Khuram Rashid, Saroosh Danish, Muhammad Akram Tahir
This work has been carried out to evaluate the potential usage of waste rubber tires in concrete. Disposal of tires is a major problem and their accumulation create health and fire hazards. To incorporate waste rubber tires in construction industry is consider…
30 Jul 2020- Articles
PREDICTING FUTURE TEMPERATURE AND PRECIPITATION OVER PAKISTAN IN THE 21ST CENTURY
Sajjad Ali, Muhammad Shahzad Khattak, Daulat Khan, Mohammed Sharif, Hamad Khan, Asmat Ullah et al.
over Pakistan for mid-century (2040–2069) and end century (2070–2099) time periods. An open source web tool namely “climate wizard” was used to obtain temperature and precipitation departures projected by three different GCMs under A1B,…
30 Jul 2020 - Articles
RULE-BASED IDENTIFICATION OF BEARING FAULTS USING CENTRAL TENDENCY OF TIME DOMAIN FEATURES
Muhammad Masood Tahir, Ayyaz Hussain, Saeed Badshah, Qaisar Javaid
Vibration-based time domain features (TDFs) are commonly used to recognize patterns of machinery faults. This study exploits central tendency (CT) of TDFs to develop a Rule-based Diagnostic Scheme (RDS), which identifies localized faults in ball bearing. The R…
30 Jul 2020 - Articles
IRRIGATION EFFICIENCIES POTENTIAL UNDER SURFACE IRRIGATED FARMS IN PAKISTAN
Ghani Akbar, Muhammad Munir Ahmad, Abdul Ghafoor, Matiullah Khan, Zafar Islam
The conventional surface irrigation systems, border, level basin and furrow bed, are inherently inefficient in Pakistan, while the suboptimal field sizes (length and width) are considered as one of the main reasons of poor performance. Addressing these issues,…
30 Jul 2020 - Articles
SEISMIC DESIGN CHARACTERIZATION OF RC SPECIAL MOMENT RESISTING FRAMES IN PAKISTAN-FIELD SURVEY TO LABORATORY EXPERIMENTS
Yasir Irfan Badrashia, Qaisar Alia, Mohammad Ashraf, Muhammad Rashid
This study was undertaken to study the influence of construction deficiencies on hysteretic behavior of exterior beam-column connections. Building stock survey was conducted in five major cities of Pakistan for identification and quantification of material and…
30 Jul 2020 - Articles
VARIATION IN CITATION BASED FRACTIONAL COUNTING OF AUTHORSHIP
Tehmina Amjad, Ishfaq Ahmad, Muhammad Akram Shaikh, Nabila Naz
Existing indexing methods do not consider the variation among number of citations received by publications of authors. In this paper, we propose variation in citation based fractional Vf -index which not only consider the number of authors but also the variati…
30 Jul 2020 - Articles
OPTIMIZATION OF GAS TUNGSTEN ARC WELDING PARAMETERS ON PENETRATION DEPTH AND BEAD WIDTH USING TAGUCHI METHOD
Muhammad Ibrahim, ShahidMaqsood, Rafiullah Khan, Muhammad Amjad, SakhiJaan
The objective of this paper is the optimization of the gas tungsten arc welding parameters on penetration depth and bead width. Taguchi L25 orthogonal array was used for the design of experiments. Welding experiments were performed on stainless steel specimens…
30 Jul 2020 - Articles
DEVELOPMENT OF A TESTING RIG FOR VIBRATION AND WIND BASED ENERGY HARVESTERS
Farid Ullah Khan, Muhammad Iqbal
This article describes the fabrication and characterization of a medium scale vibration shaker and a wind tunnel for testing of micro and meso scale vibration based, wind based and hybrid (using combined vibration and wind) energy harvesters. The mechanical sh…
30 Jul 2020 - Articles
EVALUATION OF FLEXURAL RIGIDITY AND ABRASION RESISTANCE OF POST AND META-FINISHED PIGMENT DYED P/C FABRICS
Shabana Rafique, Shahnaz Parveen Khattak, Tanveer Hussain, Faiza Tauqeer, Bashir Ahmad
The present study was conducted to explore the pigment colouration system in conjunction with functional finishing treatments for polyester/cotton (P/C) blended fabrics; further to assess its effect on flexural rigidity and abrasion resistance. The simultaneou…
30 Jul 2020 - Articles
PARAMETRIC SENSITIVITY ANALYSIS OF CONVEX STAR PORT PROPELLANT GRAIN FOR SOLID ROCKET MOTOR
Aqeel Nawaz, Muhammad Ali Kamran
Grain design takes the central place in a solid rocket motor design activity. Ballistic quality of a designed grain can be evaluated by two vital indexes known as neutrality and sliver content. Sliver content results in tail-off of the thrust-time curve. These…
30 Jul 2020 - Articles
STUDY OF POLLUTION LAOD IN PAPER MILL EFFLUENTS AND ITS RECYCLING BY SUNDRY PLANTS AT HAYATABAD INDUSTRIAL ESTATE, PESHAWAR
Nazish Huma Khan, Mohammad Nafees, Adila Bashir, Farooq Ahmad
This study was initiated to explore the concept of recycling of paper mill effluents at Hayatabad Industrial Estate, Peshawar. The objective was to reduce pollution load of paper mill effluents via recycling of sundry plants. For this purpose a detail study wa…
30 Jul 2020 - Articles
DESIGN OF A LOW NOISE, LOW POWER AND SPURIOUS FREE PHASE FREQUENCY DETECTOR AND CHARGE PUMP FOR PHASE-LOCKED LOOPS
Muneeb Abrar, Shabbir Majeed Chaudhry
This paper presents a very simple approach to design effective PFD (Phase Frequency Detector) and charge pump (CP)circuitsfor high frequency Phase-Locked Loop (PLL) applications. ThePFD design uses only six transistors for the detection process, which reduces…
30 Jul 2020