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University of Texas, San Antonio *

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4633

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Mechanical Engineering

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Oct 30, 2023

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The University of Texas # San Antonlo CE 4183/5183 - Experimental Stress Analysis Spring 2023 Lecture: M, W 6:00 —7:15 MH 2.02.16 Laboratory: LSTL Instructor: Adolfo Matamoros 2.307 AET, 458-7851 Adolfo.Matamoros@utsa.edu Office Hours: M and W 2:00 to 4:00 pm and by appointment CE 5183 Blackboard Internet Site: http:/ /utsa.blackboard.com Course Description The course will cover basic principles of experimental measurements, including basic modeling theory, similitude laws, and dimensional analysis. The course will also cover basic principles of commonly-used sensors for measuring strain, displacement, and load. Students will learn to build and operate sensors through experiments. Coarse Goals * To learn techniques for measurement of strain, stress, displacement, and acceleration. * To become familiar with and to understand the operation of various types of sensors to measure strain, stress, displacement, and acceleration. * To learn proper techniques for collection of data using analog and digital data loggers. * To recognize the different types of models that can be used for experimental analysis of structures. * To apply dimensional analysis for interpreting experimental results from small-scale models. Student [earning Objectives/Outcomes After completing the course students should be able to recognize and properly use different types of sensors for applications in experimental analysis of structures. Students should have acquired an understanding of the basic principles used to develop the sensors discussed in the class, to evaluate the quality of the data obtained from measurements, and to make adjustments to improve the quality of test data if necessary. Course Prerequisites: CE 3103 (Mechanics of Solids) Suggested Texts: » A. Shukla and J.W. Dally, Experimental Solid Mechanics, Second Edition, College House Enterprises, Knoxville, Tennessee.

« J.W. Dally and W F. Riley, Experimental Stress Analysis, Fourth Edition, College House Enterprises, Knoxville, Tennessee. * H. G. Harris and G. M. Sabnis, "Structural Modeling and Experimental Techniques," Second Edition, CRC Press, Boca Raton, Florida, 1999. * “Student Manual," Measurements Group, 2006 Grades: Class Grade Calculation Grade Scale A+ Gr =95 Labs 30% A 92 > Gr >95 Homework 20% A- 89>Gr>92 Semester Project 30% B+ 86 = Gr > 89 Midterm Exams 20% B 82> Gr > 86 B- 79> Gr > 82 C+ 76 > Gr > 79 C 722Gr>76 C- 69=>Gr>72 D+ 66 = Gr > 69 D 62 > Gr > 66 D- 59> Gr > 62 F Gr<59 Two midterm exams are scheduled for Wednesday March 8", and Wednesday April 26™ The semester project will consist of a small experiment or a written paper on experimental measurements. Written papers must present summaries of at least 10 technical papers related to sensors or experimental techniques in engineering mechanics. All projects include a 10-page report due Wednesday May 10% by 5:00 pm. Topics: Review of stress and strain Theory of structural models Similitude laws Displacement, force, and strain sensors Wheatstone bridge theory and applications Introduction to digital image correlation for full-field strain measurements Laboratory Exercises * Laboratory exercises will be carried out during the semester. These exercises include: mechanical gages, strain gage installation, Wheatstone Bridge, load cells, extensometer calibration, LVDT calibration, measuring principal strains using a Rosette gage, vibrating beam.

» Laboratory sessions involving sensors will be held in Large Scale Testing Laboratory, located that the intersection of Barshop Blvd and Tobin Ave. The following safety rules must be observed while working at the Structural Laboratory: 1. Students must dress appropriately for the task. Shorts and sandals are not allowed in the laboratory. Safety glasses must be worn when using hand and power tools. 2. All projects must be marked with a name and contact number. 3. All scrap materials are to be picked up and disposed of properly. 4. Work areas are to be clean when work is done. Sweep down and pick up. 5. When necessary, lab equipment must be cleaned after use. 6. All tools used are to be returned to proper storage. 7. If you have any questions ask, we are here to help you be successful in your project. Required Safety training In order to gain admittance to the LSTL students must complete the following on-line training modules at https://utsa.bioraft.com: Course 903: Hazard Communication and General Lab Safety Course 640: Hazardous Waste Generator Training Course 907: General Industrial Safety Training for Research Spaces Students must upload to the collection box set up in blackboard a certificate of completion of the three courses before they are granted permission to enter the LSTL. Available Software UTSA makes available to engineering students three different virtual desktop consoles (VDIs) with shared used software, called MyApps VDI (https://myappsvdi.utsa.edu). The virtual desktops allow students to use their own devices (laptops, desktops, tablets, phones, Chromebooks etc.) as an interface to use programs made available through the VDIs. Once you are in the MyAppsVDI website, you will be asked to log in before the programs are streamed to your device. For more information visit http://utsa.edu/vdi. At this website, you can find answers to Frequently Asked Questions like: What is a VDI/Virtual Desktop? How does it work? Who can access VDIs? How do I access VDI? May I access the VDI from my tablet or phone? Why are other users able to see other VDIs that I may not have access to? As a CEID registered student, you are entitled to see and use the following VDIs: CACP_VDI Engineering_VDI Student_General ***Note that once you start working on one of the applications, you will need to save your work on OneDrive or an external drive before logging out. Work will NOT BE SAVED if you log out before saving.***

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***Users cannot access both the UTSA VPN and MyAppsVDI at the same time.*** If you have to use the UTSA VPN, please connect to MyAppsVDI first, and then connect to the UTSA VPN. If you are already using the UTSA VPN, you have to disconnect first. (Some users find it easier to just reboot their computer). General Information Common information can be found at http:/ /provost.utsa.edu/syllabus.asp Counseling Services: Counseling Services provides confidential, professional services by staff psychologists, social workers, counselors and psychiatrists to help meet the personal and developmental needs of currently enrolled students. Services include individual brief therapy for personal and educational concerns, couples/relationship counseling, and group therapy on topics such as college adaptation, relationship concerns, sexual orientation, depression and anxiety. Counseling Services also screens for possible learning disabilities and has limited psychiatric services. Visit Counseling Services at http:/ /utsa.edu/counsel/ or call (210) 458-4140 (Main Campus) or (210) 458-2930 (Downtown Campus). Student Code of Conduct and Scholastic Dishonesty: The Student Code of Conduct is Section B of the Appendices in the Student Information Bulletin. Scholastic Dishonesty is listed in the Student Code of Conduct (Sec. B of the Appendices) under Sec. 203 http:/ /catalog.utsa.edu/informationbulletin/ appendices/studentcodeofconduct/ Students with Disabilities: The University of Texas at San Antonio in compliance with the Americans with Disabilities Act and Section 504 of the Rehabilitation Act provides “reasonable accommodations” to students with disabilities. Any student with a disability who is requesting an accommodation for this course must provide the instructor with official documentation in the form of a letter from Student Disability Services. Only those students who have officially documented a need for an accommodation will have their request honored. Information regarding diagnostic criteria and policies for obtaining disability-based academic accommodations can be found at www.utsa.edu/disability or by calling Student Disability Services at (210) 458-4157 (Main) or (210) 458-2945 (Downtown). Transitory/Minor Medical Issues: In situations where a student experiences a transitory /minor medical condition (e.g. broken limb, acute illness, minor surgery) that impacts their ability to attend classes, access classes or perform tasks within the classroom over a limited period of time, the student should refer to the class attendance policy in their syllabus.

Inclusive Excellence The University of Texas at San Antonio, a Hispanic Serving Institution situated in a global city that has been a crossroads of peoples and cultures for centuries, values diversity and inclusion in all aspects of university life. As an institution expressly founded to advance the education of Mexican Americans and other underserved communities, our university is committed to ending generations of discrimination and inequity. UTSA, a premier public research university, fosters academic excellence through a community of dialogue, discovery, and innovation that embraces the uniqueness of each voice.