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121	Gluing Kerfing Hemphill, Bill 28 October 2021 (has links) https://dc.etsu.edu/oer-guitars-images-complete/1009/thumbnail.jpg Acoustics, Dynamics, and Controls Algebra Algebraic Geometry Appalachian Studies Applied Mathematics Biology Computer-Aided Engineering and Design Engineering Education Engineering Science and Materials Forest Sciences Industrial and Product Design Manufacturing Music Other Engineering Physics Polymer and Organic Materials Polymer Science Science and Mathematics Education
122	Screenshot 3D Pen BBT Side Mold Assy M02D with Spreader Hemphill, Bill 01 January 2022 (has links) https://dc.etsu.edu/oer-guitars-images-complete/1010/thumbnail.jpg Acoustics, Dynamics, and Controls Algebra Algebraic Geometry Appalachian Studies Applied Mathematics Biology Computer-Aided Engineering and Design Engineering Education Engineering Science and Materials Forest Sciences Industrial and Product Design Manufacturing Music Other Engineering Physics Polymer and Organic Materials Polymer Science Science and Mathematics Education
123	Screenshot BBT Side Mold Assy M02D RC02 Hemphill, Bill 07 June 2022 (has links) https://dc.etsu.edu/oer-guitars-images-complete/1011/thumbnail.jpg Acoustics, Dynamics, and Controls Algebra Algebraic Geometry Appalachian Studies Applied Mathematics Biology Computer-Aided Engineering and Design Engineering Education Engineering Science and Materials Forest Sciences Industrial and Product Design Manufacturing Music Other Engineering Physics Polymer and Organic Materials Polymer Science Science and Mathematics Education
124	Screenshot CNC Toolpaths BBT Side Mold Assy M02D RC02 Hemphill, Bill 07 June 2022 (has links) https://dc.etsu.edu/oer-guitars-images-complete/1012/thumbnail.jpg Acoustics, Dynamics, and Controls Algebra Algebraic Geometry Appalachian Studies Applied Mathematics Biology Computer-Aided Engineering and Design Engineering Education Engineering Science and Materials Forest Sciences Industrial and Product Design Manufacturing Music Other Engineering Physics Polymer and Organic Materials Polymer Science Science and Mathematics Education
125	Screenshot Dimensions BBT Side Mold Assy M02D RC02 Hemphill, Bill 07 June 2022 (has links) https://dc.etsu.edu/oer-guitars-images-complete/1013/thumbnail.jpg Acoustics, Dynamics, and Controls Algebra Algebraic Geometry Appalachian Studies Applied Mathematics Biology Computer-Aided Engineering and Design Engineering Education Engineering Science and Materials Forest Sciences Industrial and Product Design Manufacturing Music Other Engineering Physics Polymer and Organic Materials Polymer Science Science and Mathematics Education
126	Screenshot Drill Template BBT Side Mold Assy M02D RC02 Hemphill, Bill 07 June 2022 (has links) https://dc.etsu.edu/oer-guitars-images-complete/1014/thumbnail.jpg Acoustics, Dynamics, and Controls Algebra Algebraic Geometry Appalachian Studies Applied Mathematics Biology Computer-Aided Engineering and Design Engineering Education Engineering Science and Materials Forest Sciences Industrial and Product Design Manufacturing Music Other Engineering Physics Polymer and Organic Materials Polymer Science Science and Mathematics Education
127	Open Guitar Building Project Hemphill, Bill 01 January 2022 (has links) The ETSU Guitar Project’s Open Education Resource (OER) site is a repository of shareable files developed and used in the design & fabrication of electric and acoustic guitars. Begun in 2010, the ETSU Guitar Building Program is affiliated with the NSF-sponsored, national STEM Guitar Project to increase student engagement in the STEM disciplines from K-12 to Higher Ed. Guitar design, prototyping & build activities in the ENTC 3600 Manufacturing Technologies course use a hands-on mix of 2D CADD, 3D modeling, traditional woodworking, CNC routing and laser etching operations in a custom shop-type environment to create unique electric solid body and semi-hollow body electric guitars. Beginning in 2019, the Engineering Technology program faculty began partnering with faculty in ETSU’s groundbreaking Department of Bluegrass, Old Time, and Roots Music Studies program in building acoustic instruments. Designs of common and specialty acoustic instrument building including luthiers’ tooling, molds, templates, jigs and fixtures as well as alternative bracing are available from this repository. / https://dc.etsu.edu/etsu-oer/1009/thumbnail.jpg OER guitars electric guitars acoustic guitars engineering Acoustics, Dynamics, and Controls Algebra Algebraic Geometry Appalachian Studies Applied Mathematics Biology Computer-Aided Engineering and Design Engineering Education Engineering Science and Materials Forest Sciences Industrial and Product Design Manufacturing Music Other Engineering Physics Polymer and Organic Materials Polymer Chemistry Science and Mathematics Education
128	Multivariate Analysis for the Quantification of Transdermal Volatile Organic Compounds in Humans by Proton Exchange Membrane Fuel Cell System Jalal, Ahmed Hasnain 05 November 2018 (has links) In this research, a proton exchange membrane fuel cell (PEMFC) sensor was investigated for specific detection of volatile organic compounds (VOCs) for point-of-care (POC) diagnosis of the physiological conditions of humans. A PEMFC is an electrochemical transducer that converts chemical energy into electrical energy. A Redox reaction takes place at its electrodes whereas the volatile biomolecules (e.g. ethanol) are oxidized at the anode and ambient oxygen is reduced at the cathode. The compounds which were the focus of this investigation were ethanol (C2H5OH) and isoflurane (C3H2ClF5O), but theoretically, the sensor is not limited to only those VOCs given proper calibration. Detection in biosensing, which needs to be carried out in a controlled system, becomes complex in a multivariate environment. Major limitations of all types of biosensors would include poor selectivity, drifting, overlapping, and degradation of signals. Specific detection of VOCs in multi-dimensional environments is also a challenge in fuel cell sensing. Humidity, temperature, and the presence of other analytes interfere with the functionality of the fuel cell and provide false readings. Hence, accurate and precise quantification of VOC(s) and calibration are the major challenges when using PEMFC biosensor. To resolve this problem, a statistical model was derived for the calibration of PEMFC employing multivariate analysis, such as the “Principal Component Regression (PCR)” method for the sensing of VOC(s). PCR can correlate larger data sets and provides an accurate fitting between a known and an unknown data set. PCR improves calibration for multivariate conditions as compared to the overlapping signals obtained when using linear (univariate) regression models. Results show that this biosensor investigated has a 75% accuracy improvement over the commercial alcohol breathalyzer used in this study when detecting ethanol. When detecting isoflurane, this sensor has an average deviation in the steady-state response of ~14.29% from the gold-standard infrared spectroscopy system used in hospital operating theaters. The significance of this research lies in its versatility in dealing with the existing challenge of the accuracy and precision of the calibration of the PEMFC sensor. Also, this research may improve the diagnosis of several diseases through the detection of concerned biomarkers. sensor volatile organic compound (VOC) alcohol isoflurane calibration multivariate principal component regression (PCR) Biochemical and Biomolecular Engineering Biomaterials Biomedical Catalysis and Reaction Engineering Chemical Engineering Chemicals and Drugs Electrical and Computer Engineering Electrical and Electronics Materials Science and Engineering Medicine and Health Sciences Membrane Science Nanotechnology Fabrication Organic Chemicals Other Chemicals and Drugs Polymer and Organic Materials Polymer Science Signal Processing
129	BBT Side Mold Assy Hemphill, Bill 07 June 2022 (has links) This electronic document file set covers the design and fabrication information of the ETSU Guitar Building Project’s BBT (OM-sized) Side Mold Assy for use with the STEM Guitar Project’s standard acoustic guitar kit. The extended 'as built' data set contains an overview file and companion video, the 'parent' CADD drawing, CADD data for laser etching and cutting a drill &/or layout template, CADD drawings in AutoCAD .DWG and .DXF R12 formats of the centerline tool paths for creating the mold assembly pieces on an AXYZ CNC router, and support documentation for CAM applications including router bit specifications, feeds, speed, multi-pass data, and layer names (formatted for AXYZ's ToolPath CAM software). BBT acoustic guitar mold side assembly CAD CADD DWG CNC router luthier ETSU OM orchestra model STEM kit storefront plywood MDF edges centerline toolpaths laser template Acoustics, Dynamics, and Controls Algebra Algebraic Geometry Appalachian Studies Applied Mathematics Biology Computer-Aided Engineering and Design Engineering Education Engineering Science and Materials Forest Sciences Industrial and Product Design Manufacturing Music Other Engineering Physics Polymer and Organic Materials Polymer Chemistry Science and Mathematics Education
130	BBT Acoustic Alternative Top Bracing CADD Data Set-NoRev-2022Jun28 Hemphill, Bill 22 July 2022 (has links) This electronic document file set consists of an overview presentation (PDF-formatted) file and companion video (MP4) and CADD files (DWG & DXF) for laser cutting the ETSU-developed alternate top bracing designs and marking templates for the STEM Guitar Project’s BBT (OM-sized) standard acoustic guitar kit. The three (3) alternative BBT top bracing designs in this release are (a) a one-piece base for the standard kit's (Martin-style) bracing, (b) 277 Ladder-style bracing, and (c) an X-braced fan-style bracing similar to traditional European or so-called 'classical' acoustic guitars. The CADD data set for each of the three (3) top bracing designs includes (a) a nominal 24" x 18" x 3mm (0.118") Baltic birch plywood laser layout of (1) the one-piece base with slots, (2) pre-radiused and pre-scalloped vertical braces with tabs to ensure proper orientation and alignment, and (3) various gages and jigs and (b) a nominal 15" x 20" marking template. The 'provided as is" CADD data is formatted for use on a Universal Laser Systems (ULS) laser cutter digital (CNC) device. Each CADD drawing is also provided in two (2) formats: Autodesk AutoCAD 2007 .DWG and .DXF R12. Users should modify and adapt the CADD data as required to fit their equipment. This CADD data set is released and distributed under a Creative Commons license; users are also encouraged to make changes o the data and share (with attribution) their designs with the worldwide acoustic guitar building community. BBT acoustic guitar brace bracing top CADD CAD DWG DXF R12 lutier ETSU OM orchestra model STEM STEM Guitar building project kit storefront 3mm 0.118" Baltic birch plywood sheet 24 18 3mm 0.118 laser cut engrave etch marking template layout Martin Martin-style X-brace X-bracing X-braced X tone arm tonal variant alternative alt ladder 277 fan classicial European tab slot bump out radiused 300 inch 25 foot 762 meter radius base vertical scallop glue wood go-bar go bar deck jig fixture gage gauge headstock head plate neck contour fret stack stackable align alignment position orientation vertical perpendicular T1 upper bout lower kerfing sand chisel shape weight lighten light tone tap carbon-dioxide CO2 10.6 µm Universal Laser Systems ULS workboard waxed baker sheet Acoustics, Dynamics, and Controls Adult and Continuing Education Algebraic Geometry Appalachian Studies Art Education Educational Technology Elementary Education and Teaching Engineering Education Geometry and Topology Harmonic Analysis and Representation Higher Education and Teaching Industrial and Product Design Manufacturing Music Music Education Other Engineering Science and Materials Polymer and Organic Materials Science and Mathematics Education Secondary Education and Teaching Structural Materials Vocational Education

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