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(Administered by the Department of Agricultural and Biosystems Engineering)

Stewart Melvin, Head of Department University Professors: Baker

Professors: Bern, Bundy, Hurburgh, L. Johnson, Kanwar, Melvin, Misra

Professors (Adjunct): Quick

Professors (Collaborators):Colvin, Deboer, Laflen

Distinguished Professors (Emeritus):

H. Johnson

Professors (Emeritus): Beer, Bekkum, Bockhop, Buchele, Hazen, Hoerner, Hull, Keeney, Lovely, Mangold, Marley, Meyer, Pedersen, Smith

Associate Professors: Anderson, Batchelor, Glanville, Greiner, Harmon, Hoff, Mickelson, Schwab, Tim, Xin

Assistant Professors: Birrell, Briggs, Brumm, Freeman, Lorimor, Powers-Schilling, Richard, Steward

Assistant Professors (Adjunct): Shahan

Assistant Professors (Emeritus): M. Boyd

Instructors (Adjunct): P. Boyd, Zmolek

Undergraduate Study

For the undergraduate curriculum in agricultur- al engineering leading to the degree bachelor of science, see College of Engineering, Curricula. This curriculum is accredited by the Engineering Accreditation Commission of the Accreditation Board for Engineering and Technology.

Agricultural Engineering Curriculum Educational Objectives:The goal of the cur- riculum in agricultural engineering is to train men and women to integrate basic physical and biological sciences through application of engineering fundamentals and design to sys- tems for production, processing, storage, han- dling, distribution, and use of food, feed, fiber and other biomaterials, and management of related natural resources worldwide. To achieve this goal, the ABE Faculty, with input from curriculum constituencies, has established the following educational objec- tives for the agricultural engineering curricu- lum:

1. To produce graduates competent in meth- ods of analysis involving use of mathematics, fundamental physical and biological sciences, engineering sciences, and in computational skills needed for their future practice of agri- cultural engineering.

2. To produce graduates with the skills neces- sary in the design process, including abilities necessary to think creatively, to formulate problem statements, to communicate effec- tively, to synthesize information, and to evalu- ate and implement problem solutions. 3. To produce graduates capable of address-

ing issues of ethics, safety, professionalism, cultural diversity, globalization, environmental impact, and social and economic impact in engineering practice.

4. To produce graduates prepared for suc- cessful careers, and for continuous profes- sional and personal growth.

5. To produce graduates with an ability to gain knowledge and answer questions through experimentation.

6. To produce graduates who can work collab- oratively and who have people skills needed for a productive and satisfying life.

Graduates find employment in diverse ag- and bio-related industries and government agen- cies, and work in engineering design, develop- ment, testing, research, manufacturing, con- sulting, sales, and service. Professional engi- neering services are performed in the agricul- tural equipment industries, building and envi- ronmental control companies, grain process- ing and handling firms, soil and water resource agencies and biotechnology companies. Food industry employment is related to pro- duction of food products. Food and process engineers design, develop, implement, and evaluate food processing procedures and sys- tems.

The department has cooperative programs established for interested and qualified stu- dents. The four-year curriculum is extended over a five-year period and interspersed with work periods at cooperating organizations. This plan offers valuable practical experience and financial assistance during the years in college.

The department offers an undergraduate cur- riculum and courses in agricultural systems technology, see College of Agriculture, Curricula.

Well qualified juniors and seniors in

Agricultural Engineering who are interested in graduate study may apply for concurrent enrollment in the Graduate College to simulta- neously pursue both B.S. and M.S. degrees. Refer to Graduate Studyfor more information.

Graduate Study

The department offers work for the degrees master of science, master of engineering, and doctor of philosophy with a major in agricultur- al engineering and minor work to students tak- ing major work in other departments. Within the major the student may specialize in soil and water resources, agricultural power and machinery, food and process engineering, or agricultural structures and environmental sys- tems engineering. Minor work is also offered in agricultural systems technology for stu- dents in other graduate majors. See

Agricultural Systems Technology.

Prerequisite to major graduate work is the completion of an undergraduate curriculum substantially equivalent to that required of agricultural engineering undergraduate stu- dents at this institution. However, because of the diversity of interests within the graduate programs in agricultural engineering, a student may qualify for graduate study even though the undergraduate training has been in a disci-

pline other than agricultural engineering. Supporting work will be required depending on the student’s background and area of inter- est with requirements defined by departmen- tal guidelines.

Well qualified juniors or seniors in Agricultural Engineering who are interested in graduate study may apply for concurrent enrollment in the Graduate College to simultaneously pur- sue both B.S. and M.S. degrees. Under con- current enrollment, students are eligible for assistantships and simultaneously take under- graduate and graduate courses.

For the master of science program at least 30 credits of acceptable graduate work must be completed with a minimum of 22 credits of course work; corresponding numbers for the master of engineering program are 31 and 27. For the degree doctor of philosophy, the corre- sponding numbers are 72 and 49; plus an addi- tional 6 hours of coursework are required as an “enrichment component” in some impor- tant subject area apart from the major, minor, or other principle thrust area. All graduate stu- dents are also expected to have some teach- ing/extension experience.

The department also participates in the inter- departmental majors in water resources, sus- tainable agriculture, and toxicology (see

Index).

Courses open for nonmajor graduate credit: 342, 363, 405, 409, 413, 422, 445, 446, 447, 478.

Courses Primarily for Undergraduate

Students

A E 110. Experiencing Agricultural and

Biosystems Engineering. (0-3) Cr. 1. S. Laboratory- based, team-oriented experiences in a spectrum of topics common to the practice of agricultural and biosystems engineering. Report writing, co-ops, internships, careers, registration planning.

A E 215. Fundamentals of Agricultural and Biosystems Engineering I. (2-2) Cr. 3. F.Prereq: A E 110, Engr 160 or 161, credit or enrollment in Math 166.Application of mathematics and engineering sci- ences to energy and mass balances in agricultural and biological systems. Emphasis is on solving engi- neering problems in the areas of hydrologic systems; precision farming; and machine systems.

A E 216. Fundamentals of Agricultural and Biosystems Engineering II. (2-2) Cr. 3. S. Prereq: A E 110, Engr 160 or 161, credit or enrollment in Math 166.Application of mathematics and engineer- ing sciences to energy and mass balances in agricul- tural and biological systems. Emphasis is on solving engineering problems in the areas of air and water vapor systems; electrical systems, grain systems; food systems and bioprocessing.

A E 271. Engineering Applications of Parametric Solid Modeling. (1-2) Cr. 1. 8 weeks. F.S. Prereq: Engr 170 or AST 215 or equivalent. Creating, editing, organizing, and documenting two-dimensional and three-dimensional geometries.

A E 272. Parametric Solid Models, Drawings, and Assemblies Using Pro/ENGINEER. (1-2) Cr. 1. 8 weeks. F.S. Prereq: Engr 170 or AST 215 or equiva- lent.Application of the Pro/ENGINEER software to create 3D solid models of parts and assemblies. Utilizing the solid models to create design documen - tation: standard drawing views, dimensions, and notes.

A E 298. Cooperative Education. Cr. R. F.S.SS.

Prereq: Permission of department. First professional work period in the cooperative education program. Students must register for this course before com- mencing work.

A E 303. Computer Applications and Systems Modeling. (2-2) Cr. 3. F. Prereq: Engr 160, Stat 305, Math 166. Computer aided solution of agricultural engineering problems by use of numerical tech- niques and mathematical models. Systems analysis and optimization applicable to agricultural and biologi- cal systems.

A E 342. Agricultural Tractor Power. (2-3) Cr. 3. S.

Prereq: M E 330. Thermodynamic principles and con- struction of tractor engines. Fuels, combustion, and lubrication. Kinematics and dynamics of tractor power applications; drawbar, power take-off and trac- tion mechanisms. Nonmajor graduate credit.

A E 363. Agri-Industrial Applications of Electric Power and Electronics. (3-2) Cr. 4. F. Prereq: Phys 222. Single phase and three phase circuit design. Electrical safety. Electric motors and controls. Programmable logic controllers. Process control. Nonmajor graduate credit.

A E 396. Summer Internship. Cr. R. SS. Prereq: Permission of department internship coordinator.

Summer professional work period.

A E 397. Engineering Internship. Cr. R. F.S. Prereq: Permission of department internship coordinator.

One semester maximum per academic year profes - sional work period.

A E 398. Cooperative Education. Cr. R. F.S.SS.

Prereq: 298, permission of department. Second pro- fessional work period in the cooperative education program. Students must register for this course before commencing work.

A E 401. Senior Seminar. (1-0) Cr. R. F. Prereq: Senior classification. Preparation and presentation of papers on agricultural engineering subjects. Discussion of engineering ethics and professional - ism. Career development.

A E 404. Instrumentation for Agricultural and Biosystems Engineering. (Dual-listed with 504.) (2-2) Cr. 3. F. Prereq: 363 or Cpr E 210 or E E 441.

Interfacing techniques for computer-based data acquisition and control systems. Basic interfacing components including A/D and D/A conversion, sig- nal filtering, multiplexing, and process control. Sensors and theory of operation applied to practical monitoring and control problems.

A E 405. GIS and Natural Resources Management.

(Same as EnSci 405.) (3-2) Cr. 3. F. Prereq: Working knowledge of computers and Windows environment.

Introduction to fundamental concepts and applica- tions of GIS in natural resources management with specific focus on watersheds. Topics include: basic GIS technology, data structures, database manage- ment, spatial analysis, and modeling; visualization and display of natural resource data. Case studies in watershed and natural resource management using ArcView GIS. Nonmajor graduate credit.

A E 409. Engineering Quantification of Biological Processes. (2-2) Cr. 3. S. Prereq: 216, Math 266; Biol 109 or 201 or 202; M E 330.Development of models to quantify response of biological systems to envi - ronmental conditions. Bioenergetics, thermodynam - ics, enzyme kinetics, metabolism, bioregulation, mechanical processes applied to plant, animal, and microbial systems. Nonmajor graduate credit.

A E 413. Practical Fluid Power Circuits. (Same as M E 413.) (0-3) Cr. 1. F. Prereq: Credit or enrollment in 447 or M E 414. Properties of fluids. Pump and motor efficiencies. Analysis and assembly of fluid power systems and experimental investigation of appropriate control systems. Application to hydro- static transmissions. Nonmajor graduate credit.

A E 422. Natural Resource Conservation Engineering. (2-3) Cr. 3. F. Prereq: 215, E M 378 or Ch E 356. Planning and design of systems to con- serve and utilize natural resources in the agricultural environment. Small watershed hydrology, water movement and utilization in the soil-plant-atmo- sphere system, agricultural water management, best management practices for control of erosion, and agricultural water quality. Nonmajor graduate credit.

A E 437. Crop Harvesting Dynamics. (Dual-listed with 537.) (2-3) Cr. 3. Alt. F., offered 2001. Prereq: 215, 303, Math 266, or equivalent. Physical principles

behind the harvesting and handling of all types of crops: grains and foods, fuels, biomass and fibers, fragrances and fertilizers. Technological principles, practice, performance analysis and design of engi- neered systems for harvesting crops, with principal emphasis on grain harvesting. Physical properties of grain, forage, fibers and other harvested biological materials. Environmental factors that affect crop quality and influence machine operation and design. Harvesting equipments design, test, operating and manufacturing criteria.

A E 445. Agricultural Engineering Design I. (1-2) Cr. 2. F.S. Prereq: A E 271 or 272, E M 324.

Identification of current design problems in agricul- tural engineering. Development of alternate solutions using creativity and engineering analysis and synthe - sis techniques. Nonmajor graduate credit.

A E 446. Agricultural Engineering Design II. (1-2) Cr. 2. F.S. Prereq: 445. Selection of promising solu- tions to design problems identified in 445 for devel - opment by design teams. Presentation of designs through oral and written reports and prototypes. Nonmajor graduate credit.

A E 447. Power and Control Hydraulics (2-0) Cr. 2. F. Prereq: Credit or enrollment in E M 378 or M E 335, A E 215 or M E 270. Properties of hydraulic flu- ids. Performance parameters of fixed and variable displacement pumps and motors. Hydraulic circuits and systems. Hydrostatic transmissions.

Characteristics of control valves. Analysis and design of hydraulic systems for power and control functions. Nonmajor graduate credit.

A E 451. Food Process Engineering.(Dual-listed with 551.) (2-3) Cr. 3. Alt. S., offered 2002. Prereq: Ch E 357 or M E 436. Application of momentum, heat, and mass transfer in food processing. Analysis of selected unit operations used in food processing. Extrusion, dehydration, thermal processing.

A E 465. Physical Properties of Biological Materials.(Dual-listed with 565.) (2-2) Cr. 3. Alt. F., offered 2002. Prereq: 216.Properties of agricultural and food materials needed in design, application, and evaluation of unit operations used in processing bio - logical materials into finished products. Rheological, thermal, viscoelastic, hygroscopic, aerodynamic, and mechanical properties.

A E 469. Grain Processing and Handling.(Dual- listed with 569.) (2-3) Cr. 3. Alt. S., offered 2003.

Prereq: 216. Cereal grain and oilseed properties, quality measurement, processing, and end-use value. Design of drying systems using computer simulation. Corn wet and dry milling. Soybean oil extraction. Grain handling systems.

A E 471. Timber Design for Agricultural Structures. (Dual-listed with 571.) (1-2) Cr. 2. Alt. S., offered 2002. Prereq: 478. Design of timber beams, columns, and fasteners. Plywood design. Analysis of timber structures by diaphragm action and matrix analysis. Post-frame building design. Design with composite materials.

A E 472. Design of Environmental Systems for Agricultural Structures. (Dual-listed with 572.) (3-0) Cr. 3. Alt. S., offered 2003. Prereq: 216, M E 330, 436.Principles and design of animal environmental systems. Animal responses to environmental modifi- cation. Insulation, heat transfer, ventilation, air jets, air distribution, heating and cooling equipment, and controls. Analysis of air quality. Research instrumen- tation. Bio-imaging.

A E 473. Manure Treatment and Bioconversion.

(Dual-listed with 573.) (3-0) Cr. 3. Alt. S., offered 2003. Prereq: Chem 167, Ch E 356 or E M 378.

Principles of chemistry, microbiology, and engineer - ing applied to design of systems for treatment and utilization of livestock manures and other agricultural byproducts. Bioenergetics of microbial processes. Composting agricultural residues. Odor measure - ment, modeling, and control.

A E 478. Design of Agricultural Structures. (2-2) Cr. 3. S. Prereq: 216, 271 or 272, E M 324. Uniform Building Code and ANSI Standard. Analysis of wind, snow, dead and live loads. Pressures from granular materials. Design of light-framed agricultural struc- tures using cold-formed steel. Flexural and compres-

sion members, connections. Application to grain bins, agricultural buildings, and equipment. Finite ele- ment analysis. Nonmajor graduate credit.

A E 490. Independent Study. Cr. 1 to 4. B. Biosystems Engineering C. Computer-aided Design E. Environmental Systems F. Food Engineering H. Honors

P. Power and Machinery Q. Structures

R. Process Engineering

S. Environmental and Natural Resources Systems U. Waste Management

A E 498. Cooperative Education. Cr. R. F.S.SS.

Prereq: 398, permission of department. Third and subsequent professional work periods in the cooper- ative education program. Students must register for this course before commencing work.

Courses Primarily for Graduate

Students, open to qualified undergradu-

ate students

A E 503. Controls for Agricultural Systems. (3-0) Cr. 3. Alt. S., offered 2003. Prereq: Math 267, E E 441. Modeling dynamic systems with ordinary differ- ential equations. Linear differential equations and solution by Laplace transforms. Feedback and stabili- ty examined in the s domain. Frequency response as an analytical and experimental tool. Analysis of selected systems from fluid power controls for agri- cultural equipment. Introduction to state variable methods of system analysis. State variable feedback using pole placement. MATLAB will be used throughout the course for modeling.

A E 504. Instrumentation for Agricultural and Biosystems Engineering. (Dual-listed with 404.) (2-2) Cr. 3. F. Prereq: 363 or Cpr E 210 or E E 441.

Interfacing techniques for computer-based data acquisition and control systems. Basic interfacing components including A/D and D/A conversion, sig- nal filtering, multiplexing, and process control. Sensors and theory of operation applied to practical monitoring and control problems. Individual and group projects required for graduate credit.

A E 505I. Watershed Modeling and GIS. (Same as Ia LL 505I.) See Iowa Lakeside Laboratory.

A E 510. Applied Crop Growth Modeling. (3-0) Cr. 3. Alt. F., offered 2002. Prereq: Math 165, Bot 320, Com S 205 or equivalent. Development of mathematical models and simulation techniques to describe physiological processes of crop growth including phenological development, biomass accu- mulation (vegetative and reproductive), water and nutrient uptake, and effects of biotic and abiotic stress. Evaluation of existing models. Criteria for selecting models.

A E 515. Integrated Crop and Livestock Production Systems. (Same as Agron 515, AnSci 515, SusAg 515.) (3-0) Cr. 3. Alt. F., offered 2001. Prereq: SusAg 509. Managing productivity and minimizing ecological impacts of agricultural systems by understanding nutrient cycles, crop residue and manure manage- ment, grazing systems, and multispecies interac - tions. Consideration of crop and livestock production within landscapes and watersheds.

A E 520. Agricultural Water Quality Engineering.

(3-0) Cr. 3. Alt. S., offered 2002. Prereq: Chem 163 or 167, Agron 154 or Geol 201, AST 324 or Agron 402 or C E 372. Physical and chemical properties and pro- cesses that affect the transport and fate of chemi- cals that occur in crop and livestock production. Methods of measurement of chemical concentra- tions and loadings on the environment. Modeling of chemical movement and fate. Methods of control of nonpoint pollution in agriculture.

A E 522. Drainage and Irrigation Engineering. (2-3) Cr. 3. Alt. S., offered 2003. Prereq: 422 or C E 372, Agron 154 or C E 360. Soil-water-plant relationships; theory of infiltration and evapotranspiration; saturat- ed and unsaturated flow through soils; movement of chemicals in the vadose zone. Design of surface and subsurface drainage systems; design of sprinkler,

trickle, and subsurface irrigation systems. Management of irrigation systems in developing countries.

A E 523. Erosion and Sediment Transport. (3-0) Cr. 3. Alt. F., offered 2003. Prereq: 422 or C E 372, Math 266. Erosion processes. Initiation of motion and overland flow. Erosion models. Flow in alluvial channels and theory of transport. Surface soil and channel stability. Wind erosion.

A E 525. Geographic Information Science. (2-3) Cr. 3. Alt. F., offered 2002. Prereq: C R P 451.

Introduction to geographic information science. Advanced topics in GIS, spatial and non-spatial data acquisition, spatial data structures and algorithms. GIS operations and applications. Decision making in a GIS context. GIS planning and implementation. GIS standard. GIS applications. GIS policy, ethical, and legal issues. Multimedia, 3D, intelligent and virtual GIS. Emerging issues.

A E 537. Crop Harvesting Dynamics. (Dual-listed with 437.) (2-3) Cr. 3. Alt. F., offered 2001. Prereq: 215, 303 and Math 266 or equivalent. Physical princi- ples behind the harvesting and handling of all types of crops: grains and foods, fuels, biomass and fibers, fragrances and fertilizers. Technological principles, practice, performance analysis and design of engi- neered systems for harvesting crops, with principal emphasis on grain harvested biological materials. Environmental factors that affect crop quality and influence machine operation and design. Harvesting equipment design, test, operating and manufacturing criteria. Extra individual/team projects required.

A E 551. Food Process Engineering.(Dual-listed with 451.) (2-3) Cr. 3. Alt. S., offered 2002. Prereq: Ch E 357 or M E 436. Application of momentum, heat, and mass transfer in food processing. Analysis of selected unit operations used in food processing. Extrusion, dehydration, thermal processing. Individual and/or group projects required for graduate credit.

A E 565. Physical Properties of Biological Materials.(Dual-listed with 465.) (2-2) Cr. 3. Alt. F., offered 2002. Prereq: 216.Properties of agricultural and food materials needed in design, application, and evaluation of unit operations used in processing bio - logical materials into finished products. Rheological, thermal, viscoelastic, hygroscopic, aerodynamic, and