Engineering Mechanical Engineering
Description
Mechanical engineering is a broad field of study that significantly impacts many technologies, including those that expand our energy resources and improve medical care. Mechanical engineers are concerned with all forms of energy conversion and transmission; the flow of fluids and heat; the development, design, manufacturing, and operation of machinery and equipment; material structure and properties; solid and applied mechanics; and transportation processes. The course of study is designed to give the student fundamental preparation to enter the fields of research, design, operation, production, sales, or management.
The mechanical engineering curriculum is structured so that students are well prepared in the fundamental areas of solid mechanics, thermal-fluid sciences, systems and design engineering, and materials engineering. Students can develop an emphasis area of study by concentrating elective courses in specific interdisciplinary areas such as aerospace engineering, automotive engineering, robotics, biomedical engineering, computational methods, manufacturing, nanotechnology and others, depending upon the technical courses available and the interest of the student. Additionally, broader general education requirements are covered through the Achievement-Centered Education (ACE) program (ace.unl.edu); the mechanical engineering curriculum requirements cover ACE areas [1-4,8,10], and students may work with their academic advisor to select courses covering areas [5-7,9].
Mission and Objectives
Mission Statement
The mission of the Department of Mechanical and Materials Engineering at the University of Nebraska is to impact society locally and globally through our educational programs, research, and service, developing knowledge and sharing our expertise in the best traditions of land-grant universities. We strive for excellence in teaching and learning at both the undergraduate and graduate levels; seek to develop novel educational opportunities; grow our public and private support for research and education; and expand our scholarship, outreach, and service.
Accreditation
The Mechanical Engineering (BS) program is accredited by the Engineering Accreditation Commission of ABET, https://www.abet.org, under the commission’s General Criteria and Program Criteria for Mechanical and Similarly Named Engineering Programs.
Program Educational Objectives
Within a few years of graduation, our mechanical engineering graduates are expected to:
- Have started successful careers based on their education or have completed a professional degree or a graduate degree in engineering or related field.
- Have begun life-long learning and development in order to remain current in their knowledge and skills and to advance in their careers.
- Have established a record of professionalism, leadership, respect, and integrity in working to serve humanity and use resources responsibly.
Admission
Admittance to the Degree Program
Students are expected to meet minimum college entrance requirements. After being admitted to the college as pre-mechanical engineering students, students wishing to pursue a degree in mechanical engineering must further be admitted to the degree program. Students who have completed 43 credit hours applicable to their mechanical engineering degree are considered for formal admission to the mechanical engineering degree program. Typically, this occurs the semester the student is enrolled in MECH 200 Engineering Thermodynamics or MATL 360 Elements of Materials Science. Those exceeding 61 credit hours must receive formal admission to the mechanical engineering degree program if they are to continue to take mechanical engineering courses. Transfer students must have at least 12 credit hours of coursework from the University of Nebraska–Lincoln on record before an application will be considered.
The requirements for admission to the degree program are a major GPA of 2.7 (that is, not counting elective courses), completion of MECH 223 Engineering Statics, no more than four withdrawals and no more than three repeated courses. Those who are not admitted to the degree program the first time are advised of the outcome and are automatically reviewed again at the end of that semester. If after two reviews a student is not admitted to the degree program, the student is advised of other majors, in engineering or elsewhere, in which they may be likely to find success.
Other
Hands-on Opportunities
One major focus of the Department is to provide students with many hands-on opportunities, both within the curriculum (through formal laboratory courses) and through extracurricular activities. Brief descriptions of some of the laboratories in the department are given below.
The Materials Laboratory is designed to study the development of microstructures during processing and to correlate the properties of materials with the observed structures. Undergraduates utilize arc melting facilities for solidification processing and alloy formation, rolling mills for deformation processing, and a variety of furnaces for thermal treatments. Characterization facilities include x-ray diffractometry and optical microscopy, while property measurements are completed using hardness testing (including microhardness), tensile testing, and impact testing facilities. Other facilities associated with the materials laboratory include rapid solidification processing facilities and electron microscopy facilities.
The Measurements Laboratory is associated with the required MECH 380 Mechanical Engineering Measurements course, which includes two hours of lecture and two hours of laboratory work each week. The course covers the fundamentals of mechanical engineering measurements including data analysis (statistics, graphing, spectral analysis); signal conditioning and data readout; and the measurement of length/displacement, rate of rotation, stress/strain, temperature, pressure, fluid velocity, fluid flow rate, vibration/acceleration, and sound. The MECH 380 lab has four workbenches. Each workbench has a set of basic measurement equipment including a digital oscilloscope, an electronic counter, a digital multimeter, a DC power supply, a function generator, and a computer-based data acquisition system consisting of a personal computer with data acquisition software and interfaced analog-to-digital converter and digital counter cards. In addition, on a week-to-week basis, specialized equipment is brought out of the cabinets and set up for each of the nine (some one week, some two week) labs.
The Kinematics and Machine Design Laboratory is a teaching laboratory for undergraduate students. The laboratory consists of equipment and instruments for conducting experiments in kinematics and machine design. One piece of major equipment is the rapid prototyping machine, which accepts design specifications from a computer and forms a prototype of the design using plastic fused deposition. This machine provides the student with experience in design integration from concept to product. Accessories in this laboratory include desktop computers, a wide-carriage printer, and other instruments. Kawasaki also donated a retired robot that is now utilized in this laboratory.
The Thermal Fluids Laboratory involves design, execution, and evaluation of physical experiments in the areas of thermodynamics, fluid mechanics, and heat transfer. There are three major, heavily-instrumented experiments:
- A two stage air-compressor with intercooling.
- A versatile air conditioning unit.
- A Ford gasoline engine with a Superflow water brake dynamometer, supported with a data acquisition system.
The course involves the design, execution, and evaluation of physical experiments in the areas of thermodynamics, fluid mechanics, and heat transfer. In addition, the facilities include “table top” instrumentation for viscosity measurement, measurement of pressure distribution on an airfoil, flow visualization, and head loss across a valve on which students conduct experiments.
The Mechatronics Laboratory is well-equipped for teaching courses in mechatronics, robotics, and controls. It is used primarily for MECH 457 Mechatronic Systems Design and MECH 450 Mechanical Engineering Control Systems Design, but is also used for other courses and by both undergraduate and graduate students working on research projects. The laboratory contains desktop computers, modular robots, digital oscilloscopes, function generators, computer controllers, soldering systems, and many other accessories.
The Department also has computational facilities available to students. The computer lab has a suite of personal computers with a full complement of computing resources available to students.
Research Laboratories. These laboratories, extensions of those described above, are equipped for research in the fields of fluid mechanics, heat transfer, thermodynamics, turbulence, flow visualization, measurements, turbomachinery and engine research, combustion, materials, mechanical design, dynamics, computational, solid and applied mechanics, biomedical engineering, and controls. Many of our undergraduate students gain valuable experience working on research projects under the guidance of professors. These are funded by research grants or the University’s UCARE program.
Some of the extracurricular opportunities for students to gain hands-on engineering experience include SAE Baja, SAE Formula (both through Husker Motorsports), NASA microgravity, AIAA competitions, and others.
College Requirements
College Admission
College Entrance Requirements
Students must meet both the University and College of Engineering entrance requirements. The following includes both the University and College of Engineering entrance requirements.
Students must have high school credit for (one unit is equal to one high school year):
- Mathematics – 4 units: 2 of algebra, 1 of geometry, and 1 of precalculus and trigonometry
- English – 4 units
- Natural sciences – 3 units that must include 1 unit of physics and 1 unit of chemistry (chemistry requirement waived for students in construction management or computer science)
- Foreign language – 2 units of a single foreign language
- Social studies – 3 units
- Students having a composite ACT score of 28 or greater (or equivalent SAT score) will be admitted to the College of Engineering even if they lack any one of the following: trigonometry, chemistry, or physics. Students without test scores who are missing a full unit of trigonometry/pre-calculus/calculus or chemistry or physics will be evaluated through College Review.
- Students having an ACT score of 19 or less in English (or equivalent SAT score) or a grade lower than B in high school English, must take ENGL 150 Writing and Inquiry or ENGL 151 Writing for Change.
A total of 16 units is required for admission.
Engineering requires that student performance meet one of the following standards: composite ACT of 24, SAT of 1180, ACT Math subscore of 24, SAT Math subscore of 580, or a 3.5 cumulative GPA.
Any domestic first-year student who does not gain admission to Engineering but does gain admission to the University of Nebraska-Lincoln (UNL) will be reviewed through College Review. College Review is conducted through the College Review Committee which considers factors beyond standardized testing. Any first-year student who is not admitted through college review is placed in Pre-Engineering (PENG) with the Exploratory and Pre-Professional Advising Center (Explore Center). Students in the Explore Center can transfer to the College of Engineering once college admission requirements are met.
Students for whom English is not their language of nurture must meet the minimum English proficiency requirements of the University.
Students who lack entrance units may complete precollege training by Independent Study through the University of Nebraska–Lincoln Office of On-line and Distance Education, in summer courses, or as a part of their first or second semester course loads while in the Explore Center or other colleges at UNL.
Students should consult their advisor, their department chair, or Engineering Student Services (ESS) if they have questions on current policies.
Other Admission Requirements
Students who transfer to the University of Nebraska–Lincoln from other accredited colleges or universities and wish to be admitted to the College of Engineering (COE) must meet COE first-year student entrance requirements, have a minimum cumulative GPA of 2.5, and be calculus-ready. Students not meeting either of these requirements must enroll in the Explore Center or another University college until they meet COE admission requirements. Students transferring from UNO, UNL, or UNK to the College of Engineering must be in good academic standing with their institution.
The COE accepts courses for transfer for which a C or better grade was received. Although the University of Nebraska–Lincoln accepts D grades from the University of Nebraska Kearney and the University of Nebraska Omaha, not all majors in the COE accept such low grades. Students must conform to the requirements of their intended major and, in any case, are strongly encouraged to repeat courses with a grade of C- or less.
Students who were previously admitted to COE and are returning to the College of Engineering must demonstrate a cumulative GPA of 2.5 to be readmitted to COE.
College Degree Requirements
Grade Rules
Grade Appeals
In the event of a dispute involving any college policies or grades, the student should appeal to their instructor, and appropriate department chair or school director (in that order). If a satisfactory solution is not achieved, the student may appeal their case through the College Academic Appeals Subcommittee.
Catalog Rule
Students must fulfill the requirements stated in the catalog for the academic year in which they are first admitted at the University of Nebraska–Lincoln. In consultation with advisors, a student may choose to follow a subsequent catalog for any academic year in which they are admitted to and enrolled as a degree-seeking student at Nebraska in the College of Engineering. Students must complete all degree requirements from a single catalog year. The catalog which a student follows for degree requirements may not be more than 10 years old at the time of graduation.
Students who have transferred from a community college may be eligible to fulfill the requirements as stated in the catalog for an academic year in which they were enrolled at the community college prior to attending the University of Nebraska-Lincoln. This decision should be made in consultation with the student’s College of Engineering academic advising team (e.g., ESS professional advisor and the chief faculty advisor for the student’s declared degree program). The chief faculty advisor has the final authority for this decision. Eligibility is based on a) enrollment in a community college during the catalog year the student wishes to utilize, b) maintaining continuous enrollment of at least 12 credit hours per semester at the previous institution for at least 2 semesters, and c) continuous enrollment at the University of Nebraska-Lincoln within 1 calendar year from the student’s last term at the previous institution. Students must complete all degree requirements from a single catalog year and within the timeframe allowable for that catalog year.
Learning Outcomes
Graduates of the mechanical engineering program will have:
- An ability to identify, formulate, and solve complex engineering problems by applying principles of engineering, science, and mathematics.
- An ability to apply engineering design to produce solutions that meet specified needs with consideration of public health, safety, and welfare, as well as global, cultural, social, environmental, and economic factors.
- An ability to communicate effectively with a range of audiences.
- An ability to recognize ethical and professional responsibilities in engineering situations and make informed judgments, which must consider the impact of engineering solutions in global, economic, environmental, and societal contexts.
- An ability to function effectively on a team whose members together provide leadership, create a collaborative and inclusive environment, establish goals, plan tasks, and meet objectives.
- An ability to develop and conduct appropriate experimentation, analyze and interpret data, and use engineering judgment to draw conclusions.
- An ability to acquire and apply new knowledge as needed, using appropriate learning strategies.
The above student outcomes have been approved by the ABET Engineering Area Delegation for use beginning with the 2019-20 academic year, and have been adopted by the faculty of the Department of Mechanical and Materials Engineering.