Loading...
Thumbnail Image

Govind Ballabh Pant University of Agriculture and Technology, Pantnagar

After independence, development of the rural sector was considered the primary concern of the Government of India. In 1949, with the appointment of the Radhakrishnan University Education Commission, imparting of agricultural education through the setting up of rural universities became the focal point. Later, in 1954 an Indo-American team led by Dr. K.R. Damle, the Vice-President of ICAR, was constituted that arrived at the idea of establishing a Rural University on the land-grant pattern of USA. As a consequence a contract between the Government of India, the Technical Cooperation Mission and some land-grant universities of USA, was signed to promote agricultural education in the country. The US universities included the universities of Tennessee, the Ohio State University, the Kansas State University, The University of Illinois, the Pennsylvania State University and the University of Missouri. The task of assisting Uttar Pradesh in establishing an agricultural university was assigned to the University of Illinois which signed a contract in 1959 to establish an agricultural University in the State. Dean, H.W. Hannah, of the University of Illinois prepared a blueprint for a Rural University to be set up at the Tarai State Farm in the district Nainital, UP. In the initial stage the University of Illinois also offered the services of its scientists and teachers. Thus, in 1960, the first agricultural university of India, UP Agricultural University, came into being by an Act of legislation, UP Act XI-V of 1958. The Act was later amended under UP Universities Re-enactment and Amendment Act 1972 and the University was rechristened as Govind Ballabh Pant University of Agriculture and Technology keeping in view the contributions of Pt. Govind Ballabh Pant, the then Chief Minister of UP. The University was dedicated to the Nation by the first Prime Minister of India Pt Jawaharlal Nehru on 17 November 1960. The G.B. Pant University is a symbol of successful partnership between India and the United States. The establishment of this university brought about a revolution in agricultural education, research and extension. It paved the way for setting up of 31 other agricultural universities in the country.

Browse

Search Results

Now showing 1 - 9 of 173
  • ThesisItemOpen Access
    Effect of stress ratio on fatigue crack growth behaviour of friction stir welding between AA6061 and AA7075 alloys
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-09) Kandwal, Abhishek; Gope, P.C.
    In the present work, fatigue crack growth in friction stir welded dissimilar AA6061 and AA7075 is performed under different stress ratio and maximum load condition. Crack is a damage that often occurs in members of structures and may cause sudden serious failure of the structures. In a structure generally weld is the weakest section and therefore more prone to failure due to crack propagation. Therefore the study of mechanism of crack growth and its parameters is of paramount importance. The effects of presence of crack on fracture parameters like crack opening stress (Sop) and stress intensity factor (K) of specimen has been the subject of various investigations. However, the parametric studies like effect of stress ratio and amplitude; on the fracture parameters of specimen for friction stir welded joints has gaps in the literature and therefore needs further investigation. Aluminium alloys AA6061 and AA7075 have been chosen for the present study as they are both used in conjunction in many areas of engineering such as marine and aircraft structures. The crack growth rate data for the weld shows that with the increase in stress ratio, fatigue life of the joint decreases. The fatigue life obtained for constant maximum load and varying stress ratio condition shows that the highest Fatigue life is obtained for stress ratio R= -0.5 (48200 cycles) and lowest for R=0.8 (22200 cycles). The curve obtained using Newman equations is closer to plain strain condition. For the constant stress ratio and varying maximum load, it was observed that the fatigue life of joint decreases with the increase in applied maximum load (Pmax) with the highest fatigue life observed for Pmax=4kN (28908 cycles) and lowest for Pmax=6kN (21635 cycles).
  • ThesisItemOpen Access
    Effects of randomly oriented secondary cracks on the fracture parameters in a rectangular plate under static loading
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-08) Ansari, Gulfam Akhtar; Bisht, Neeraj
    In the present work, a numerical study using finite element is performed to investigate the effects of randomly oriented secondary cracks on the fracture parameters in a rectangular plate under static loading. Crack is damage that often occurs in members of structures and may cause the sudden serious failure of the structures. The effects of the presence of crack on fracture parameters like stress intensity factor and T-stress of specimen has been the subject of various investigations. However, the parametric studies like the effect of crack offset distance, crack size, orientation and number of crack present on the fracture parameters of the specimen are scarce in the literature. The finite element software ANSYS is used to simulate the fracture parameters. Numbers of studies were conducted to study the accuracy of ANSYS and the meshing parameters on which the accuracy depends. Two types of crack geometries were considered viz. parallel cracks and inclined cracks with different crack ratios. Also, the effect of several secondary cracks was studied. The presence of secondary cracks induced a shielding effect on the primary crack. The presence of secondary crack results in the development of mode II SIF. The mode mixing, however, was minimal and the mode II SIF was insignificant compared to mode I SIF. It is observed that when the cracks are closer to each other the shielding effect is high and as the cracks move away the shielding effect decreases. With the increase in inclination angle intensification effect is decreases. The shielding was also higher for a greater number of neighbouring cracks. Higher length of secondary cracks also increased the shielding effect. A correlation between SIF and T stress was also developed and it was seen that they are highly correlated. T stress can also be an important alternative fracture parameter to study crack interaction problems. Statistical analysis was performed to study the impact of various parameters in comparison to each other for all the geometries it was seen that the crack offset distance has a major influence on SIF compared to the crack ratios. Also, inclined cracks were seen to have a profound impact on SIF compared to parallel cracks. Multi-site damage is a common occurrence in aircraft and nuclear industries and the results of the study can contribute to accessing the structural integrity of the structure and estimate the in-service life of the component.
  • ThesisItemOpen Access
    Design and development of an animal drawn subsurface manure applicator
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-09) Negi, Ankit; Singh, Jayant
    Agriculture is a production oriented sector in which farmers apply various crop inputs. The farmers are over applying the chemical fertilizers to fulfil global food demand. The over utilization of chemical fertilizers such as Urea and DAP has undermine the quality of soil. Moreover, the over use of these chemical fertilizers have drastic effect on the human health avoid the volatilization of Nitrogen in the form of Ammonia and can enhance the properties of soil. Therefore an animal drawn subsurface manure applicator was developed and its performance was evaluated in laboratory as well as in field conditions. The study shows that screw type metering mechanism is appropriate for the developed machine. The metering mechanism had to deliver to. The study shows that there is insignificant effect of hopper height and travel speed on the uniformity of manure distribution. The theoretical manure rate, actual manure rate and efficiency of screw conveyer were observed to be as well as on the environment. The subsurface application manure can 11.62, 7.01 and 60.32%. The draft requirement for untilled field conditions was observed as 0.63, 0.68, 0.68 and 0.77 kN for the speed of 1.5, 2, 2.5 and 3 km/h at the 50 mm depth of operation. Similarly, the draft was observed as 0.72, 0.77, 0.82 and 0.86 kN for the Speed of 1.5, 2, 2.5 and 3 km/h at the 100 mm depth of operation. Also, the draft was observed as 1.20, 1.30, 1.34 and 1.39 kN respectively for the speed of 1.5, 2, 25 and 3 km/h at the 150 mm depth of operation. The draft requirement for tilled field conditions was observed as 0.53, 0.63, 0.68 and 0.68 kN for the speed of 1.5, 2, 2.5 and 3 km/h at the 50 mm depth of operation. Also, the draft requirement was observed as 0.73, 0.78, 0.87 and 0.87 kN for the speed of 1.5, 2, 2.5 and 3 km/h at the 100 mm depth of operation. Also, the draft requirement was observed as 0.92, 1.01, 1.06 and 1.10 KN for the speed of 1.5, 2, 2.5 and 3 km/h at the 150 mm depth of operation.
  • ThesisItemOpen Access
    Optimization of process parameters for drying of lotus root slices
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-11) Reena Kumari; Omre, P.K.
    The experiment was carried out to standardization of pre-treatment for prevention of browning ant to study the drying characteristics of lotus root slices under different drying conditions. The material was given chemical treatment (Ascorbic acid, Sodium bicarbonate and Potassium metabisulphite) for 10 min. and physical treatment like hot water blanching at 70, 75 and 80 0C for 3, 6 and 9 min. at each temperature. The browning index were measured for 0 to 5 h at every 1 h interval. Based on the browning index, the 0.3 % KMS and hot water blanching at 70 0C for 6 min. + 0.3 % KMS selected as pre-treatment prior to drying. The fresh (untreated) and pre-treated samples was dried at 60, 70 and 80 0C using the tray dryer. The quality parameters of the dried product like rehydration ratio, moisture diffusivity, colour parameters (L*, a* and b*), total phenolic content and antioxidant activity were determined. The initial moisture content was 76.32, 78.24 and 84.56 % (wb) of fresh, dipping in 0.3 % KMS for 10 min and hot water blanching at 70 0C for 6 min. than dipping in 0.3 % KMS for 10 min, samples, respectively. Dehydration characteristics of revealed that drying took place in the falling rate period irrespective of treatment and temperature of drying. The hot water blanched (70 0C for 6 min) + chemical (0.3 % KMS) samples took the least time for drying followed by sample treated with 0.3% KMS and untreated (fresh). The optimized browning index was minimum (1.498 to 4.963) for 0.3 % KMS as compared to 5.337 to 16.02 and 2.73 to 9.227 for 1.5% sodium bicarbonate and Ascorbic acid, respectively. For blanched samples browning index was minimum (3.08) at 70 0C for 5.44 min. as compared to others blanched samples. The rehydration ratio was varied from 1.56 to 2.82, 2.09 to 3.50 and 1.68 to 3.32 for samples with treatment T1 (control), T2 and T3, respectively. The maximum RR was observed for treatment T2 treated samples followed by samples treated with T3 and T1 under all drying conditions, respectively. The maximum RR was 3.58 of 2 mm thick samples treated with T2 treatment. The maximum effective moisture diffusivity 9.37 × 8.85 × and 10.59 × m2 s-1 of 6 mm thick sample treated with treatment T1, T2, and T3, respectively. The total phenolic content of the fresh lotus roots slices extract was found 4.23 mg GAE/g dw. The total phenolic content of dried samples was varied from 2.14 to 2.71, 2.61 to 3.28 for samples treated with treatment T1, T2 and T3, respectively. The maximum phenolic content was 3.51 of 4 mm sample treated with treatment T2. The antioxidant activity of the fresh lotus roots slices was found 93.71 %. The antioxidant activity of dried samples was varied from 62.58 to 78.88, 68.65 to 81.29 and 64.96 to 78.10 for samples treated with treatment T1, T2 and T3, respectively. The maximum antioxidant activity was 81.29 of 4 mm sample treated with treatment T2. The colour parameters L*, a* and b* of fresh lotus root slices were found 100.32, 3.76 and 9.99, respectively. It was observed that the L* values increase as increase in temperature (60 to 80 0C) and decrease as slices thickness increase (2 to 6 mm). Besides that, the values of a* and b* increase as increase in temperature (60 to 80 0C) and slices thickness (2 to 6 mm) of all samples.
  • ThesisItemOpen Access
    Behaviour of RC building with outrigger system subjected to earthquake and wind effect
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-09) Bisht, Prabhanshu; Katariya, S.K.
    The outrigger and belt truss system is commonly used as one of the structural system to effectively control the excessive drift due to lateral load, so that at the time of small or medium lateral load due to either wind or earthquake load, the risk of structural and non-structural damage can be minimized. For high-rise buildings, particularly in seismic active zone or wind load dominant, this system can be chosen as an appropriate structure. This paper studies the use of outrigger and belt truss system for high-rise concrete building subjected to wind or earthquake load. In this thesis 50, 55 and 60 storey two dimensional models of outrigger and are subjected to wind load. For the two dimensional 50 storey model, 65% maximum displacement reduction can be achieved by providing first outrigger at the top and second outrigger at the middle of the structure height. For the two dimensional 60 storey structural model subjected to the earthquake load, about 18 % reduction in maximum displacement can be achieved with optimum location of the outrigger truss placed at the top and the 33rd level. It has been observed that the maximum reaction has been generated in the soil type III (Soft soil) for all three structures (G+50, G+55 & G+60). It can be concluded after reviewing the values in table of base shear that Gust Factor load case governs the analysis as well as design for the soil type I (Hard Soil). The base shear generated by the Gust Factor load case is maximum among all the load cases in soil type I. It is safer to build tall structure on the soil type I (hard soil) rather than soil type II, (medium soil) and soil type III (soft soil).
  • ThesisItemOpen Access
    A novel approach to improve the Z-SEP protocol in WSNs
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-08) Dhek, Ankita; Mandoria, H.L.
    The eminence of Wireless Sensor Networks (WSNs) has grown massively in the past years because WSN has the possibility to associate the physical world with the virtual world by framing a system of various sensor nodes by deploying it in a network. Here, sensor nodes are typically battery-driven gadgets, and consequently energy consumption of sensor nodes is a noteworthy design issue. To handle this issue Cluster based routing is most popular routing technique in Wireless Sensor Networks(WSNs). Due to various need of WSN applications, efficient energy utilization in routing protocols is still a potential area of research. The proposed work tried to overcome the problem of energy contraint in Z-SEP protocol in such a way that energy consumption of every node in the wireless sensor networks is minimized with the help of improving the stability period, instability period ,network lifetime and throughput. This thesis solves the problem by proposing a clustering based single-sink routing protocol for heterogeneous wireless sensor networks in which 3 types of nodes are introduced. The idea of multi-hop communication and distance factor is considered.Using the MATLAB simulation the result is compared with the Z-SEP protocol and the result shows that the proposed protocol outperforms the Z-SEP protocol.
  • ThesisItemOpen Access
    Design and development of a manually operated rice transplanter
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-08) Deepak Kumar; Pateriya, R.N.
    Rice is a major food grain crop and staple food of millions of people in the world. About 90 per cent of rice grown in the world is produced and consumed only in Asian countries. In India rice crop is planted in almost all the states and the area under rice cultivation was 43.79 Mha and the total estimated rice production of India was 112.91 MT in 2017-18 (Agricultural Statistics at a Glance 2018, MA&FW. Rice crop is generally sown by means of two methods in India, i.e. broadcasting of seeds and transplanting of paddy seedlings. Out of these two methods, transplanting of seedlings is the most common practice in India. However the main problem in the production of rice is transplanting operation, which is tedious and labour consuming, because a person has to stand in puddled field and and bend for putting seedlings by hands into the soil. Optimum plant density and timely operation of transplanting has been considered essential for maximizing the yield of rice. During the transplanting season, there occurs an acute shortage of labour. Hence mechanical transplanting has been observed to be most promising option. The power operated transplanter is also available but the socio-economic condition of the Indian farmer dose not to permit them to purchase the same due to its high cost. Hence there is need to design a manually operated, low cost and light weight rice transplanter. Therefore the present study was carried out at GBPUA&T, Pantnagar for the design and development of a manually operated rice transplanter for root washed seedlings. The performance evaluation was carried out with three level of seedling age (20, 25 and 30 days) at three levels of water depth (0-30, 30-60 and 60-100 mm) in three different level of field preparation (low, medium and high). The missing hills, floating hills, damaged hills, buried hills, hill to hill spacing, planting efficiency, actual field capacity and field efficiency were evaluated during experiment. The minimum missing hills (16.7 %) was observed with 20 days old seedlings in 0-30 mm water depth at low level of field preparation. The minimum floating hills (15.1 %) was recorded at medium level field preparation in 0-30 mm water depth with 30 days seedling age. The minimum damaged hills (5.5 %) was obtained in 30-60 mm water depth with 30 days seedling age at medium level of field preparation. The minimum buried hills (3.6 %) was observed with 30 days old seedlings at medium level of field preparation in 0-30 mm water depth. The maximum planting efficiency (83.3 %) was obtained in 0-30 mm water depth with 20 days seedling age at low level field preparation. The actual field capacity and field efficiency were obtained as 0.02 ha/h and 62.26 % respectively.
  • ThesisItemOpen Access
    Effects of crack branching on fracture parameters under biaxial static loading
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-09) Saxena, Harshit Kumar; Bisht, Neeraj
  • ThesisItemOpen Access
    Dynamic analysis of honeycomb sandwich laminated composite plate
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-08) Adlakha, Prash; Mishra, Anadi
    A structural sandwich is a peculiar form of a laminated composite comprising of a combination of distinct materials which are bonded together to use effectively the properties of each separate component to the structural advantage of the whole assembly. Two thin, rigid and quite strong faces in the framework are partitioned by a thick, light and weaker core. The faces are attached adhesively to the core to ensure effective load transfer between the components. Owing to the core structure, such composites are differentiated by their stiffness. Despite the thickness of the core, sandwich composites are characterized by their light structure and a good flexural strength. These composites possess unique structure, which provides it a good thermal insulator property. Sandwich composites finds a wide range of application in aeronautics, transportation such as road vehicles, ships, winds, marine and civil engineering. The Laminated sandwiched composite pate is preferred over simple laminated composite plate due to their great ability to essentially decrease weight while maintaining optimum mechanical performance. This weight reduction provides a large number of benefits which includes higher payloads, increased range and comparatively less fuel consumption. The Present study is done to study and investigate the Sandwich composite Panel which is formed by laminating composite sheets with Aluminium Honeycomb core and Dynamic Analysis is done to study its behaviour by computing natural frequency and corresponding deflection. Triangular, Square and Hexagonal cell for the honeycomb will be used to find the best shape under dynamic loading. Further, the effect of hexagonal cell parameter will be studied in order to find optimum parameters in ANSYS 18.1 Software.