MECH 322 Instrumentation Lecture 42 Miles Greiner Goals Course
Evaluation
Slide 2
Possible Elective Course MSE 467: Radiation Detection and
Measurement Professor N. Tsoulfanidis
[email protected]@sbcglobal.net TuTh 5:30-6:45 PM, LME
316 Pre/Co-requisites: Interest in Nuclear Energy MATH 181
Textbook: Measurement & Detection of Radiation, N. Tsoulfanidis
and S. Landsberger, 3rd Ed, CRC Press (2010); ISBN-10:
1420091859
Slide 3
Lab Practicum Finals Start this afternoon Guidelines
http://wolfweb.unr.edu/homepage/greiner/teaching/
MECH322Instrumentation/Tests/Index.htmhttp://wolfweb.unr.edu/homepage/greiner/teaching/
MECH322Instrumentation/Tests/Index.htm Revised Schedule Starts at 4
PM Today See next page and WebCampus
Slide 4
Finals Schedule
Slide 5
Career Overview Survey Name (not
necessary)_________________________________________________ What
year did (or will) you: ___________ Graduate High School
___________ Enter UNR ___________ Take your first Calculus Class
___________ Enter ME Department ___________ Plan to graduate with a
BS degree What will you do this summer (can chose more than one)?
Work ___________ ME-related job (where ___________,
on-campus___________) ___________ Non-ME job ___________ Did the
Colleges internship/placement program help? ___________ Volunteer
___________ Summer school ___________ Other (military, )
___________ Dont know What can the Department do to help qualified
students complete their degrees more quickly?
_______________________________________________________ What are
you thinking about doing after graduation (can chose more than
one)? ___________ ME-related job ___________ Non-ME job ___________
Graduate School ___________ ME at UNR ___________ UNRs accelerated
BS/ME program ___________ ME elsewhere (where ___________)
___________ Non-ME (what ___________) ___________ Something else
(what ___________)
Slide 6
Course Objectives, Overview & Evaluation Observe and
measure important physical phenomena, and compare to expectations
Manometer fluid movement, Hydrostatic pressure head Beam bending,
strain, elastic modulus, density measurements Steel and aluminum
Bernoulli fluid pressure variation with speed Venturi tube and
Pitot probe Boiling water temperature dependence on atmospheric
pressure Seebeck effect Thermocouples produce measureable
repeatable voltage at junctions of dissimilar metals Heat transfer
coefficient depends on fluid conductivity Predictable beam
vibration frequency and damping Karman vortex frequency Feedback
control (full on/off, proportional, integral) Errors in processing
time-varying signals caused from noise and aliasing Predicted,
Unpredicted, and Unpredictable behaviors In lab we sometimes
observe things we did not expect Requires reinterpretation and/or
troubleshooting (can be interesting)
Slide 7
Develop comfort using instruments, data acquisition and control
systems Understand theory of operation and possible errors of
specific devices Electronic pressure transmitters, Monometers
Strain gages, Strain indicator bridge Pitot probes, Venturi, Hot
film anemometers Thermocouples, signal conditions, LM35 myDAQ and
LabVIEW Accelerometers Digital Relays DMM, micrometers, rulers,
scales
Slide 8
Develop Good Lab Practices Prepare for measurements before
conducting them and allocate sufficient time to performing them Use
mathematical models to predict behaviors, to the extent possible
Troubleshoot hardware, computer and software problems Perform
steady and transient measurements, and understand potential errors
Bias (calibration) Random (not repeatable) Transient (instruments
require time to respond) Communicate Use clear tables and charts to
present engineering data Analyze and draw conclusions based on data
Engineering understanding begins after the measurements (or
calculations) are completed Practice reduces stress of doing
experiments Helps students to find them rewarding and a possible
career path.
Slide 9
To Focus on Objectives, course has Reasonable work load Each
Lab had Stages Clear handouts and lectures (I tried!) Web Site
access to required and supplemental materials Lab Preparation
Homework and Sample Reports Help students know what is expected
Reduce lab-time confusion Do these make the lab too easy? LabVIEW
programming by example (not theory) Write reports in lab: Analyze
soon after data acquisition (allows re-acquisition) Gives student
access to instructor help Bulleted conclusion format Outlines
formal reports (prepare for senior year) Structured Extra-Credit
opportunities (~3%)
Slide 10
Next Year Use Differential fees to Offer LabVIEW to students
for no or limited-cost Prepare LabVIEW at home Offer to check out
Labs-in-a-Box from DeLaMare Library, containing myDAQ, equipment,
sensors and signal conditioners for Thermocouple and Beam Vibration
Labs Boiling Water Temperature, Transient TC, and Control, and
Vibration labs Use in ECC, DeLaMare or at home Removes time
constraints and gives students more unstructured time with the
equipment to Troubleshoot programs before labs Practice for final
Use in other classes or projects Explore programming and equipment
Potential cost, breakage and liability problems
Slide 11
Feedback Did you like ? Lab preparation problems Finishing labs
in three hours Lectures slides on web Were the lectures Too
detailed (waste of time) Just right (Clear and helpful) Too vague
(cant understand) What about the mathematical lectures? Transient
Thermocouple, Beam vibration, controls Were the lab assistants able
to help you, or did they solve too many problems for you? Was the
lab too structured Would you have liked more time to explore
things? Would you like to see more low-priced chip-based
transducers that you can buy online and use on your own?
New 2015 Elastic modulus and density of Steel and Aluminum
beams Next year purchase stain gases with attached leads Measure
beam vibration for two beam lengths
Slide 15
ABET Student Learning Objectives This course is designed to
help Mechanical Engineering students develop abilities to: Apply
knowledge of mathematics, science, and engineering Design and
conduct experiments, as well as to analyze and interpret data
Identify, formulate, and solve engineering problems
Slide 16
PART I A: EVALUATION OF THE INSTRUCTOR 1.The instructor was
effective in facilitating learning in the classroom 2.The
instructor was well prepared and organized 3.The instructor
encouraged student questions and participation in class 4.The
instructor was available and helpful outside of class 5.The
instructor demonstrated a thorough knowledge of the course content
6.The instructor provided a clear course syllabus and completed the
course objectives 7.Exams and assignments were appropriate and
covered the course content and objectives. 8.The pace and amount of
work required for this course were appropriate PART I B: COURSE
INFORMATION AND EVALUATION 1.The textbook and handouts contributed
to your learning 2.The audiovisual materials used in the classroom
contributed to your learning 3.The computer resources were adequate
and were effectively incorporated into teaching 4.The classroom
environment was conducive to learning
Slide 17
5 Statistical Methods Labs 1.UNR Quad Measurement Find grass
seed cost and uncertainty, very practical 2.Quad Data Analysis
Mean, St. Dev (Data Exclusion, Correlation Coefficient) Wide range
of results highlights need for calibration 3.Monometer Calibration
Calibration removes bias Standard Deviation of output and input
quantifies impression 4.Strain Gage Installation length error
estimates 5.Elastic Modulus Measurement Uncertainty in best fit
slope Propagation of error, compare calculated to literature value
Written Midterm
Slide 18
3 Steady and Data Acquisition Labs 6.Air Speed and Volume Flow
Rate Use pressure transmitters, check consistency Propagation of
error 7.Steady Temperature of Boiling Water at Elevation TC, signal
conditioner, LabVIEW, compare with prediction 8.Numerical
Differentiation and Spectral Analysis of Unsteady Signals Sampling
Rate Theory, Time derivatives Demonstrate unsteady data processing
errors and solutions Written Midterm
Slide 19
4 Unsteady Measurement Labs 9.Transient Response of a
Thermocouple Heat transfer in water and air (effect of k Fluid )
uncertainty 10.Vibration of a Weighted Cantilever Beam Natural
frequency prediction and damping uncertainty 11.Karmon Vortex
Unsteady Speed Dynamic measurement and spectral analysis
uncertainty 12.Temperature Feedback Control Analog output, digital
relay, logic Lab Practicum Final
Slide 20
Evaluation ME Curriculum has 14 outcomes 1.The course increased
my ability to apply the principles of mathematics, science, and
engineering Instrument models, dynamic response of TC, vibrating
beam, error analysis 2.The course increased my ability to conduct
and design experiments, as well as to analyze and interpret data
Focused on understanding and performing experiments 3.(not
applicable) The course increased my ability to identify and
document desired needs and to design a system component, or process
to meet desired needs within realistic constraints such as
economic, environmental, social, political, ethical, health and
safety, manufacturability, and sustainability
Slide 21
4.(not applicable) The course increased my ability to function
on multi-disciplinary teams 5.The course increased my ability to
identify, formulate, and solve engineering problems Lab experiences
require interpreting measurements, dealing with unexpected results,
and troubleshoot problems 6.(not applicable) The course increased
my ability to explain professional and ethical responsibility and
identify professional and ethical issues 7.The course increased my
ability to communicate effectively Quantitative engineering
communication using tables and charts Draw bulleted conclusions
from data Abstract of results Formal citations
Slide 22
Evaluation (cont) 8.(not applicable) The course enhanced my
broad education necessary to understand the impact of engineering
solutions in a global, economic, environmental, and social context
9.(not applicable) The course increased my ability to explain the
need for, and an ability to, engage in life-long learning 10.(not
applicable) The course increased my ability to identify and analyze
contemporary issues 11.The course increased my ability to use the
techniques, skills, and modern engineering tools necessary for
engineering practice Modern measurement instrumentation Computer
Data Acquisition and Control program
Slide 23
12.The course increased my ability to apply the principles of
science, including chemistry and calculus-based physics, in the
identification, formulation, and solution of engineering problems;
with depth in at least one of chemistry or calculus- based physics
knowledge domains. Newtons law analysis: Vibrating beam First law
analysis: Dynamic response of thermocouple 13.(not applicable) The
course increased my ability to apply the principles of mathematics
and computational methods, including multivariable calculus and
differential equations, in the identification, formulation, and
solution of engineering problems. 14.The course increased my
familiarity with statistics and linear algebra. Sample mean,
standard deviation Linear Regression, St Dev of fit, Propagation of
Error
Slide 24
New 2014 Detailed Lecture Slides with Examples on the White
Board Corrected after each lecture Updated nomenclature, consistent
with lab instructions Lab 3, Pressure Standards Fully integrated
myDAQs into labs Lab 10, Time-dependent decay constant Lab 12,
Integral Control