7,407 research outputs found
The Friction And Wear Characteristic Of Fe-based P/M Materials In Scroll Compressor
No full textWith the development of materials science and technology, Iron-based powder metallurgy (P/M) antifriction materials gradually used to scroll compressor. In this paper, three kinds of Iron-based powder metallurgy antifriction materials, which are Fe-C-Cu, Fe-C-Cu-Ni-Mo and Fe-P were prepared by the common compacting sintering method. Microstructure and mechanical properties were studied, tribological properties were tested on the friction tester, and surface topographical characteristics and wear mechanism of the Iron-based powder metallurgy materials antifriction were observed and analyzed by scanning electron microscope (SEM). The results showed that, the strength of Fe-C-Cu and Fe-C-Cu-Ni-Mo are higher than Fe-P. The microstructure of Fe-C-Cu and Fe-C-Cu-Ni-Mo are mainly composed of pearlite, Fe-P is ferrite. The impact toughness of Fe-P is better than the other two. Compared the tribological properties of aluminum alloys YZAlSi11Cu3 and powder metallurgy antifriction materials under oil lubrication condition, Fe-C-Cu and Fe-C-Cu-Ni-Mo have excellent wear resistance. The wear rate of Fe-C-Cu-Ni-Mo is equivalent to one sixth of YZAlSi11Cu3. The wear mechanism of YZAlSi11Cu3 was deformation and adhesion. Powder metallurgy antifriction materials were dominated by fatigue and deformation, and accompanied by a small amount of abrasive wear
Computer Skills Effects of Flight Data Monitoring Technology in an Aircraft Inspection Process
No full textPurdue University has recently purchased and deployed a new fleet of aircraft that include a cutting edge avionics suite with flight data monitoring technology. This technology gathers data during flight on airframe, powerplant, and flight parameters of the airplane. This study evaluated how the new technologies influenced the inspection process of the airplanes, as well as highlight new skills required by the inspectors to utilize the technologies. This issue was addressed because inspectors may not be able to take full advantage of what the new data from the airplane if they don’t possess the proper skills to access and assess the information. The project was conducted through process mapping the inspection process as it is currently without the new technology, and after the implementation of the new technology. The maps were used to identify how the process and where the process has changed. From these changes it highlighted the skills were required to use the new technology. The result of the project was four process maps, as well as identification of different skills needed to complete the inspection utilizing the new technology. The process maps with the skills highlighted, may be used to develop training needs or as a tool to benchmark required skills and abilities during the hiring process
Purdue Libraries Graduate Student Services Task Force
No full textThis is a findings report generated by a Purdue University Libraries Learning Council Task Force on graduate student services
President Elliott and others
No full textPhotograph of President E.C. Elliott, L to R: E.B. Baugh, Frank H. Sparks, Bishop John G. Bennett, D. Preston Calvert, Louis M. Sears, Harry P. Schultz, Burr S. Swezey, Pres. Elliott, William A. Hanley, Rev. Reese F. Thornton, Bert Loeb, Richard J. Blackhall, K.F. Dickinson, John A. Hillenbrand, Scott Weller, L.S. Dixon. Chamber of Commerce Dinner Donoring Pres. Elliott, 3/14/1945, Purdue Memorial Union
Comparison of Best Economy and Best Power Mixture Settings in the Purdue University Training Fleet Revisited
No full textBest economy (lean of peak or LOP) operation of aircraft engines rather than best power (rich of peak or ROP) has been suggested as a means to reduce fuel consumption in light aircraft with modest speed reduction leading to reduced operating cost (increased miles per gallon), and to reduce cylinder head temperatures (CHTs) leading to improved engine longevity and reduced maintenance cost. A recent study by Chrisman (2011) using a limited number of data sets from aircraft in the Purdue University fleet of Cirrus SR20 training aircraft demonstrated statistically significant reduced fuel consumption and reduced CHT but no statistically definite speed reduction. This study confirms the earlier results for fuel consumption and CHTs using expanded data sets. It suggests that the failure to derive a statistically significant reduction in speed is a consequence of inherent experimental limitations rather than the lack of any reduction
What Purdue is doing for Indiana agriculture
No full textAgricultural Experiment Station / Arthur Goss -- Animal Husbandry Department / J. H. Skinner, F. G. King, A. G. Philips, D. O. Thompson -- Botanical Department / J. C. Arthur, F. D. Kern, F. J. Pipal, C. R. Orton, Evelyn Allison, Mary A. Fitch, Thomas Billings -- Department of Dairy Husbandry / O. F. Hunziker, J. D. Larvis, P. L. Roberts, George Spitzer, W. F. Epple, H. C. Mills, P. H. Crane, W. R. Wright -- Horticultural Department / James Troop, C. G. Woodbury, J. W. Wellington, M. W. Richards, J. G. Boyle -- Soils and Crops Department / A. T. Wiancko, S. D. Conner, M. L. Fisher, J. B. Abbott, C. O. Cromer -- State Chemist Department / W. J. Jones, F. D. Fuller, E. G. Proulx, C. Cutler, R. B. Deemer, O. S. Roberts, J. W. McFarland -- Veterinary Department / R. A. Craig, H. H. Madaus, R. A. Whiting -- School of Agriculture / John H. Skinner -- Department of Agriculture Extension / G. I. Christie, W. C. Latta, G. M. Frier, Gertrude McCheyne, Lovina S. Meric
Small Aircraft Transportation Viability
No full textThis study focuses on the long-debated question of “fly or drive” by comparing the economic costs associated with the value of employee time. Driving, flying on small aircraft, and airline travel methods are compared. The top 31 Purdue Turbine Flight Operations (TFO) routes from January 1, 2009 to January 1, 2010 were used for analysis. Cirrus SR-20 and Embraer Phenom 100 aircraft were analyzed versus driving and airline travel when booked 3 days or two weeks in advance. The study concludes with a hypothetical university case study. With consideration taken to ensure use of accurate university figures, an economic decision-making tool is created, and a framework for future studies is formed. Results lend an insight to the importance of time and accurate measure of actual employee worth instead of productivity en route when deciding among certain modes of transportation. They also demonstrate the concept of practical use of university aircraft as a transportation tool for university employees
Agricultural extension
No full textPurdue University Agricultural Experiment Station / Arthur Goss -- Chemical Department / Arthur Goss, S. D. Conner, J. B. Abbott -- Agricultural Department / A. T. Wiancko, M. L. Fisher, C. O. Cromer -- Animal Husbandry Department / J. H. Skinner, W. A. Cochel -- Veterinary Department / R. A. Craig, H. H. Madaus -- Dairy Husbandry Department / O. F. Hunziker, H. C. Mills, George Spitzer, P. H. Crane, W. F. Epple -- Horticultural Department / James Troop, C. G. Woodbury, B. R. Ryall -- State Chemist's Department / W. J. Jones, E. G. Proulx, A. C. Summers, O. C. Haworth, C. Cutler, C. W. Rice -- Agricultural Extension Department / G. I. Christie, G. M. Frier -- School of Agriculture / John. H. Skinne
Agricultural extension VIII: information on work of Purdue Experiment Station and School of Agriculture
No full textAgricultural Extension Department / G. I. Christie, G. M. Frier, Helen H. Henry -- Agronomy Department / A. T. Wiancko, M. L. Fisher, C. O. Cromer -- Animal Husbandry Department / J. H. Skinner, H. P. Rusk -- Botanical Department / J. C. Arthur, A. G. Johnson, Mary A. Fitch, F. D. Kern, Thos. Billings, Evelyn Allison -- Chemical Department / Arthur Goss, S. D. Conner, J. B. Abbot -- Dairy Husbandry Department / O. F. Hunziker, H. C. Mills, O. E. Reed, George Spitzer, P. Roberts, W. R. Wright, W. F. Epple -- Horticulture department / J. Troop, C. G. Woodbury, J. W. Wellington, M. W. Richards, J. G. Boyle -- State Chemist Department / W. J. Jones, E. G. Proulx, C. W. Rice, F. D. Fuller, C. Cutler, S. P. Armsby -- Veterinary Department / R. A. Craig, H. H. Madaus -- School of Agriculture / John H. Skinne
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