Montana State University

Composite Technologies Research Group

SELECTED PAPERS, REPORTS and STUDENT THESES

Contractor reports

Mandell, J.F., Samborsky, D.D., Agastra, P., Sears, A.T., and Wilson, T.J., "Analysis of SNL/MSU/DOE Fatigue Database Trends for Wind Turbine Blade Materials," Contractor Report SAND2010-7052, Sandia National Laboratories, Albuquerque, NM (2010). [PDF FILE]

Wahl, N.W., Mandell, J.F., and Samborsky, D.D., "Spectrum Fatigue Lifetime and Residual Strength for Fiberglass Laminates," Contractor Report SAND2002-0546, Sandia National Laboratories, Albuquerque, NM (2002). [PDF FILE]

Mandell, J.F., Samborsky, D.D., and Cairns, D.S. "Fatigue of Composite Materials and Substructures for Wind Turbine Blades," Contractor Report SAND2002-0771, Sandia National Laboratories, Albuquerque, NM (2002). [PDF FILE]

Mandell, J. F., Samborsky, D. D., Combs, D.W., Scott, M.E., and Cairns, D.S, "Fatigue of Composite Material Beam Elements Representative of Wind Turbine Blade Substructure," NREL Contractor Report SR-500-24379, November 1998. [PDF FILE]

Mandell, J.F., and Samborsky, "DOE/MSU Composite Material Fatigue Database: Test Methods, Materials, and Analysis," Contractor Report SAND97-3002, Sandia National Laboratories, Albuquerque, NM (1997). [PDF FILE]

Mandell, J.F., Reed, R.M. Jr. and Samborsky, D.D., "Fatigue of Fiberglass Wind Turbine Blade Materials," Contractor Report SAND92-7005, Sandia National Laboratories, Albuquerque, NM (1992). [PDF FILE]

Papers

Mandell, J.F., Samborsky, D.D. and Miller, D., "Creep/Fatigue Behavior of Resin Infused Biaxial Glass Fabric Laminates," 54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2013, DOI 10.2514/6.2013-1630

Mandell, J.F., Samborsky, D.D. and Miller, D., "The SNL/MSU/DOE Fatigue of Composite Materials Database: Recent Trends," 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 23–26 April 2012, Honolulu, Hawaii, AIAA-2012-1573, DOI 10.2514/6.2012-1573

Miller, D., Mandell, J.F. and Samborsky, D.D.,"Performance of Composite Materials Subjected to Salt Water Environments," 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 23–26 April 2012, Honolulu, Hawaii, AIAA-2012-1575, DOI 10.2514/6.2012-1575.

Riddle, T., Cairns, D., and Nelson, J., "Effects of Defects: Part A—Development of a Protocol for Defect Risk Management & Improved Reliability of Composite Structures," 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 23–26 April 2012, Honolulu, Hawaii, AIAA-2012-1420.

J. Nelson, T. Riddle, D. Cairns, J. Workman, "Effects of Defects: Part B—Progressive Damage Modeling of Fiberglass/Epoxy Composite Structures with Manufacturing Induced Flaws," 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 23–26 April 2012, Honolulu, Hawaii, AIAA-2012-1421.

Kyeongsik, W., Wang, W., Peterson, M., Cairns, D., and Mandell, J., "Fracture Analysis of Thick Adhesive Joints for Wind Turbine Blades,"  53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, 2012, 10.2514/6.2012-1423

Samborsky, D.D., Sears, A.T., Agastra P. and Mandell, J.F., "Mixed Mode Static and Fatigue Crack Growth in Wind Blade Paste Adhesives," 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, Denver, April 2011, AIAA-2011-1755, DOI 10.2514/6.2011-1755.

J.Nelson, D. Cairns, and T. Riddle, "Manufacturing Defects Common to Composite Wind Turbine Blades: Effects of Defects," 52th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2011, Denver, Co, 4-7 April 2011, AIAA-2011-1756.

T. Riddle, D. Cairns and J. Nelson, "Characterization of Manufacturing Defects Common to Composite Wind Turbine Blades: Flaw Characterization," 52th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2011, Denver, Co, 4-7 April 2011, AIAA-2011-1758

Samborsky, D.D., Agastra, P., and Mandell, J.F., "Fatigue Trends for Wind Blade Infusion Resins and Fabrics", 2010 AIAA SDM, April 2010, Orlando, Wind Energy Session, AIAA-2010-2820, DOI 10.2514/6.2010-2820 [PDF FILE]

Sears, A.T., Samborsky, D.D., Agastra, P., and Mandell, J.F., "Fatigue Results and Analysis for Thick Adhesive Notched Lap Shear Test", 2010 AIAA SDM, April 2010, Orlando, Wind Energy Session, AIAA-2010-2821, DOI 10.2514/6.2010-2821 [PDF FILE]

Agastra, P. and Mandell, J. F., "Testing and Simulation of Damage Growth at Ply Drops in Wind Turbine Blade Laminates", SAMPE 2010, May 2010, Seattle, Paper 398. [PDF FILE]

Qian, C, Nijssen, R. P. L., Samborsky, D.D., Kassapoglou, C, Gürdal, Z., Zhang, C.Q.,"Tensile Fatigue Behavior of Single Fibres and Fibre Bundles", 14th European Conference on Composite Materials, 7-10, June 2010, Budapest, Hungary.

Agastra, P. Samborsky, D.D., and Mandell, J.F.,"Fatigue Resistance of Fiberglass Laminates at Thick Material Transitions," Palm Springs, May 2009, paper AIAA-2009-2411, DOI 10.2514/6.2009-2411. [PDF FILE]

Samborsky, D.D., Sears, A.T., Mandell, J.F., and Kils, O., "Static and Fatigue Testing of Thick Adhesive Joints for Wind Turbine Blades," 2009 Wind Energy Symposium, Orlando, Florida, January 5-8, 2009, AIAA-2009-1550, DOI 10.2514/6.2009-1550. [PDF FILE]

Mandell, J.F., Samborsky, D.D., Agastra, P., "Composite Materials Fatigue Issues in Wind Turbine Blade Construction," SAMPE 2008, Long Beach, May 18-22, 2008. [PDF FILE]

Samborsky , D.D, Wilson, T.J., Agastra, P., and Mandell, J.F., "Delamination at Thick Ply Drops in Carbon and Glass Fiber Laminates Under Fatigue Loading," Journal of Solar Energy Engineering, Special Issue on Wind Energy, ASME, Vol.130, August 2008, pp.1-8. [PDF FILE]

Samborsky, D.D, Agastra, P., and Mandell, J.F., "Effects of Glass Fabric and Laminate Construction on the Fatigue of Resin Infused Blade Materials," 2008 Wind Energy Symposium, January 2008, Reno, Nevada, DOI 10.2514/6.2008-1346 [PDF FILE]

Jacob, G.C., Bernd H., Pham, H.Q., Dettloff, M.L., Verghese,N.E., Turakhia, R.H., Hunter, G., Mandell, J.F., Samborsky, D.D.,"Technical Advances in Epoxy Technology for Wind Turbine Blade Composite Fabrication," SAMPE 2009, October 19-22, 2009, Wichita, Kansas. [PDF FILE]

Samborsky, D.D, Wilson, T.J., and Mandell, J.F., "Comparison of Tensile Fatigue Resistance and Constant Life Diagrams for Several Potential Wind Turbine Blade Laminates," 2007 Wind Energy Symposium, January 2007, Reno, Nevada. AIAA-2007-820, DOI 10.2514/6.2007-820. [PDF FILE]

Samborsky, D.D, Avery, D.P., Agastra, P., and Mandell, J.F., "Delamination at Thick Ply Drops in Carbon Fiber Laminates Under Fatigue Loading," 2006 Wind Energy Symposium, January 2006, Reno, Nevada, DOI 10.2514/6.2006-1195. [PDF FILE]

Sutherland, H.J., and Mandell, J.F., "Optimized Goodman Diagram for the Analysis of Fiberglass Composites Used in Wind Turbine Blades," 2005 ASME Wind Energy Symposium, ASME/AIAA., AIAA-2005-0196. pp.18-27, (2005), DOI 10.2514/6.2005-196. [PDF FILE]

Nijssen, R.P.L., Samborsky, D.D., Mandell, J.F., van Delft, D.R.V., “Strength Degradation and Simple Load Spectrum Tests in Rotor Blade Composites,” 2005 ASME Wind Energy Symposium, ASME/AIAA., AIAA-2005-0197, pp. 28-38. (2005), DOI 10.2514/6.2005-197 [PDF FILE]

Avery, D. P., Samborsky D. D., Mandell, J. F. and Cairns, D. S., "Compression Strength of Carbon Fiber Laminates Containing Flaws with Fiber Waviness," 2004 ASME Wind Energy Symposium, ASME/AIAA., AIAA-2004-0174, pp. 54-63. (2004), DOI 10.2514/6.2004-174 [PDF FILE]

Sutherland, H.J., and Mandell, J.F., "Effect of Mean Stress on the Damage of Wind Turbine Blades,"  42nd AIAA Aerospace Sciences Meeting and Exhibit, 2004, DOI 10.2514/6.2004-172

Mandell, J.F., Samborsky, D.D., Wahl, N.K., and Sutherland, H.J., "Testing and Analysis of Low Cost Composite Materials Under Spectrum Loading and High Cycle Fatigue Conditions," Proceedings of The 14th International Conference on Composite Materials (ICCM-14), Society of Manufacturing Engineers, San Diego, California, July 14 - 18, 2003. Paper 1811. (2003) [PDF FILE]

Mandell, J.F., Cairns, D.S., Samborsky, D.D., Morehead, R.B., and Haugen,D.J., "Prediction of Delamination in Wind Turbine Blade Structural Details," Journal of Solar Energy Engineering, ASME, Vol. 125, No. 4, pp. 522-530. November 2003. (2003)

Mandell, J.F., Samborsky, D.D., Wang, L., and Wahl, N.K., "New Fatigue Data for Wind Turbine Blade Materials," Journal of Solar Energy Engineering, ASME, Vol. 125, No. 4, pp. 506-514. November 2003. (2003).

Mandell, J.F., Samborsky, D.D., Wang, L., and Wahl, N.K., "New Fatigue Data for Wind Turbine Blade Materials," 2003 ASME Wind Energy Symposium, ASME/AIAA. AIAA-2003-0692, pp. 167-179, DOI 10.2514/6.2003-692. [PDF FILE]

Cairns, D.S., Mandell, J.F., and Samborsky, D.D., "Quantification of Processing Parameters for Wind Turbine Blades," 2003 ASME Wind Energy Symposium, ASME/AIAA. AIAA-2003-0694, pp. 180-190, DOI 10.2514/6.2003-694 [PDF FILE]

Mandell, J.F., Cairns, D.S., Samborsky, D.D., Morehead, R.B., and Haugen, D.J., "Prediction of Delamination in Wind Turbine Blade Structural Details," 2003 ASME Wind Energy Symposium, ASME/AIAA. AIAA-2003-0697, pp. 202-213, DOI 10.2514/6.2003-697. [PDF FILE]

Mandell, J.F. Samborsky, D.D., and Wang, L., "Effects of Fiber Waviness on Composites for Wind Turbine Blades," Proceedings of the 48th International SAMPE Symposium, Vol. 48, SAMPE 2003, Long Beach, CA, May 11-15, 2003. pp. 2653 - 2678, ISBN 0-938-99494-8, (2003) [PDF FILE]

Wahl, N.K., Samborsky, D.D., Mandell, J.F., and Cairns, D.S., "Effects of Modeling Parameters on the Accuracy of Spectrum Fatigue Lifetime Predictions for a Fiberglass Laminate," 2002 ASME Wind Energy Symposium, ASME/AIAA. [PDF FILE]

Larsen, E.B., Cairns, D.S., Mandell, J.F., and Samborsky, D.D., "Investigation of a Two-Stage Resin Injection Process to Reduce Effects of In-Plane Resin Flow, ", Wind2002-26, pp.40-46. 2002 ASME Wind Energy Symposium, ASME/AIAA. [PDF FILE]

Wahl, N.W., Samborsky, D.D., Mandell, J.F., and Cairns, D.S., "Spectrum Fatigue Lifetime and Residual Strength for Fiberglass Laminates in Tension,"2001 ASME Wind Energy Symposium, AIAA-2001-0025, ASME/AIAA. (2001), DOI 10.2514/6.2001-25  [PDF FILE]

Cairns D.S., Skramstad J.D. and Mandell J.F., "Evaluation of Hand Lay-up and Resin Transfer Molding in Composite Wind Turbine Blade Structures" 2001 ASME Wind Energy Symposium, ASME/AIAA, pp. 38-48., DOI 10.2514/6.2001-24

Cairns, D.S., Sears, A.T., Mandell, J.F. and McKittrick, L.R. "Design considerations for Buckling of Composite Wind Turbine Blades" 2000 ASME Wind Energy Symposium, 2000, pp. 375-393. DOI 10.2514/6.2000-59

Cairns, D.S, and Skramstad, J.D., "Manufacturing Process Evaluations for Composite Wind Turbine Blades," SAMPE 2000, Long Beach, CA May 21 - 25, 2000.

Mandell, J.F., Samborsky, D.D., Li. M., Orozco, R., and Cairns, D.S., "Selection of Fiberglass Matrix Resins for Increased Toughness and Environmental Resistance in Wind Turbine Blades," 2000 ASME Wind Energy Symposium, ASME/AIAA, AIAA-2000-0057, pp. 354- 366. (2000), DOI 10.2514/6.2000-57 [PDF FILE]

Samborsky, D. D., Mandell, J. F., and Cairns, D. S, "Selection of Reinforcing Fabrics for Wind Turbine Blades," 1999 ASME Wind Energy Symposium, AIAA-99-0024, ASME/AIAA, pp. 32-42. (1999). [PDF FILE]

Mandell, J. F., Samborsky, D. D., Sutherland, H. J., "Effects of Materials Parameters and Design Details on the Fatigue of Composite Materials for Wind Turbine Blades," 1999 European Wind Energy Conference, 1-5 March 1999, Nice, France, pp. 628-633. [PDF FILE]

Cairns, D.S., Mandell, J.F., Scott, M.E., Maccagnano, J.Z.,"Design and Manufacturing Considerations for Ply Drops in Composite Structures," Composites: Part B 30 (1999) pp. 523-534. [PDF FILE]

Cairns D.S., McKittrick L., Combs D., Mandell J.F., Rabern D., and VanLuchene R. "Design/Manufacturing Synthesis of a Composite Blade for the AOC 15/50 Wind Turbine Blade" 1999 ASME Wind Energy Symposium, pp. 58-65.

Cairns D.S., Humbert D.R., and Mandell J.F., "Resin Transfer Molding of Composite Materials with Oriented Unidirectional Plies" Composites Part A: Applied Science and Manufacturing, Volume 30, Number 3, March 1999, pp. 375-383(9)

Mandell, J. F., Samborsky, D. D., Scott, M.E., and Cairns, D. S, "Effects of Structural Details on Delamination and fatigue Life of Fiberglass Laminates," 1998 ASME Wind Energy Symposium, ASME/AIAA, 98-0061, pp. 323 - 327. (1998), DOI 10.2514/6.1998-61. [PDF FILE]

Cairns, D. S., Haugen, D. J., Mandell, J. F., and Samborsky, D. D., "Fracture of Skin/Stiffener Intersections in Composite Wind Turbine Structures," 1998 Wind Energy Symposium, ASME/AIAA, 98-0062, pp. 334 - 343. (1998), DOI 10.2514/6.1998-62. [PDF FILE]

Mandell, J.F., Samborsky, D.D., and Cairns, D.S., "Advanced Wind Turbine Blade Structure Development Program at Montana State University," 1997 ASME Wind Energy Symposium, ASME/AIAA, AIAA-97-0952, pp. 189-196 (1997), DOI 10.2514/6.1997-952. [PDF FILE]

Cairns, D.S., Mandell, J.F., Scott, M.E., Maccagnano, J.Z.,"Design Considerations for Ply Drops in Composite Wind Turbine Blades," 1997 ASME Wind Energy Symposium, ASME/AIAA, AIAA-97-0953, pp. 197 - 208. (1997). [PDF FILE]

Samborsky, D.D., and Mandell, J.F., "Fatigue Resistant Fiberglass Laminates for Wind Turbine Blades," 1996 ASME Wind Energy Symposium, ASME, pp. 46-51 (1996). [PDF FILE]

Sutherland, H.J., Mandell, J.F., "Application of the U.S. High Cycle Fatigue Data Base to Wind Turbine Blade Lifetime Predictions.," 1996 ASME Wind Energy Symposium, ASME, pp. 85-92. (1996). [PDF FILE]

Mandell, J.F., Combs, D.E., and Samborsky, D.D., "Fatigue of Fiberglass Beam Substructures," 1995 ASME Wind Energy Symposium, W.D. Musial, S.M. Hock, and D.E. Berg, Eds., SED- Vol. 16, ASME, pp. 99 - 106 (1995). [PDF FILE]

Mandell, J.F.; Samborsky, D.D., "MSU/DOE Wind Turbine Blade Composite Material Fatigue Database," November 1995, Sandia National Laboratories, Albuquerque, NM, 87185. Yearly updates available at www.sandia.gov/wind/

Mandell, J.F., Creed, R.M. Jr., Pan, Q., Combs, D.W., and Shrinivas, M., "Fatigue of Fiberglass Generic Materials and Substructures" in SED-Vol 15, 1994 ASME Wind Energy Symposium, W.D. Musial, S.M. Hock and D.E. Berg, eds., ASME, New York, pp. 207-213 (1994). [PDF FILE]

Mandell, J.F., Reed, R.M. Jr., Samborsky, D.D., and Pan, Q., "Fatigue Performance of Wind Turbine Blade Materials," in SED-Vol 14, 1993 ASME Wind Energy Symposium, S. Hock, ed., ASME, New York, pp. 191-198. (1993). [PDF FILE]

Mandell, J.F., Reed, R.M., and Samborsky, D.D., "High Cycle Fatigue of Wind Turbine Blade Materials," in SED-Vol 12, 1992 ASME Wind Energy Symposium, P.S. Veers, S.M. Hock, eds., ASME, New York, p. 105 (1992). [PDF FILE]

 

Masters and PHd Thesis

Wilson, Tim, "Modeling of In-Plane and Interlaminar Fatigue Behavior of Glass and Carbon Fiber Composite Materials," M.S. Thesis, Department of Mechanical and Industrial Engineering, Montana State University, 2007. [PDF]

Collett, Aaron, "A Validation Study of the Montana State University In-Plane Loader,"M.S. Thesis, Department of Mechanical and Industrial Engineering, Montana State University, 2006. [PDF]

Bundy, Bryan, "Use of Pultruded Carbon Fiber / Epoxy Inserts as Reinforcement in Composite Structures," M.S. Thesis, Department of Mechanical and Industrial Engineering, Montana State University, 2005. [PDF]

Mastbergen, Dan, "Modeling of a Pressure Bag Molding Process for Wind Turbine Blades," M.S. Thesis, Department of Mechanical and Industrial Engineering, Montana State University, 2004. [PDF]

Ritter, Will, "Application of Energy Methods to Modeling Failures in Composite Materials and Structures," M.S. Thesis, Department of Mechanical and Industrial Engineering, Montana State University, 2004. [PDF]

Larsen, Erik, "Pressure Bag Molding: Manufacturing, Mechanical Testing, Non-Destructive Evaluation, and Analysis," Department of Mechanical and Industrial Engineering, Montana State University, 2004. [PDF]

Agastra, Tiok, "Mixed Mode Delamination of Glass Fiberglass/Polymer Matrix Composite Materials," Department of Chemical Engineering, Montana State University, 2003. [PDF]

Wang, Lei, "Effects of In-plane Fiber Waviness on the Properties of Composite Materials," M.S. Thesis, Department of Chemical Engineering, Montana State University, 2001. [PDF]

Wahl, Neil, "Spectrum Fatigue Lifetime and Residual Strength for Fiberglass Laminates," Ph.D. Thesis, Department of Mechanical and Industrial Engineering, Montana State University, 2001. [PDF]

Evertz, Russell, "Investigation of Core Closeouts in Fiber-Reinforced Sandwich Laminates," M.S. Thesis, Department of Mechanical and Industrial Engineering, Montana State University, 2001. [PDF]

Rossell, Scott, "Fluid Flow Modeling of Resin Transfer Molding for Composite Material Wind Turbine Blade Structures," M.S. Thesis, Department of Chemical Engineering, Montana State University, 2000. [PDF]

Morehead, Robert, "Fatigue of Skin-Stiffener Intersections in Composite Wind Turbine Blade Substructures," M.S. Thesis, Department of Mechanical Engineering, Montana State University, 2000. [PDF]

Li, Mei, "Temperature and Moisture Effects on Composite Materials for Wind Turbine Blades," M.S. Thesis, Department of Chemical Engineering, Montana State University, 2000. [PDF]

Samborsky, Daniel, "Fatigue of E-glass Fiber Reinforced Composite Materials and Substructures," M.S. Thesis, Department of Civil Engineering, Montana State University, 1999. [PDF]

Sears, Aaron, "Experimental Validation of Finite Element Techniques for Buckling and Post buckling of Composite Sandwich Shells," M.S. Thesis, Department of Chemical Engineering, Montana State University, 1999. [PDF]

Orozco, Ricardo, "Effects of Toughened Matrix Resins on Composite Materials for Wind Turbine Blades," M.S. Thesis, Department of Chemical Engineering, Montana State University, 1999. [PDF]

Haugen, Darrin J., "Fracture of Skin-Stiffener intersections in Composite Wind Turbine Blade Structures," M.S. Thesis, Department of Mechanical Engineering, Montana State University, 1999. [PDF]

Scott, Ethan, "Effects of Ply Drops on the Fatigue Resistance of Composite Materials and Structures," M.S. Thesis, Department of Chemical Engineering, Montana State University, 1997. [PDF]

Humbert, Dell, "Modeling of Resin Transfer Molding of Composite Materials With Orientated Unidirectional Plies," M.S. Thesis, Department of Chemical Engineering, Montana State University, 1996. [PDF]

Bian, Jinhua, "Fiberglass Composite Tensile Fatigue Resistance: Fiber Surface Damage Analysis and Fatigue Resistant Fiber Coating," M.S. Thesis, Department of Chemical Engineering, Montana State University, 1996. [PDF]

Combs, David, "Design, Analysis and Testing of a Wind Turbine Blade Substructure," M.S. Thesis, Department of Mechanical Engineering, Montana State University, 1995. [PDF]

Wei, Guangxi, "High Cycle Longitudinal and Transverse Fatigue of Unidirectional Glass/Polyester Composites," M.S. Thesis, Department of Chemical Engineering, Montana State University, 1995. [PDF]

Belinky, Andrew, "High Cycle Compressive Fatigue of Unidirectional Glass/Polyester Performed at High Frequency," M.S. Thesis, Department of Chemical Engineering, Montana State University, 1994. [PDF]

Hedley, Chuck, "Mold Filling Parameters in Resin Transfer Molding," M.S. Thesis, Department of Chemical Engineering, Montana State University, 1994. [PDF]

Pan, Rena, "Fatigue Behavior of Glass Fiber Reinforced Composite Materials for Wind Turbine Blades," M.S. Thesis, Department of Chemical Engineering, Montana State University, 1994. [PDF]

Shrinivas, Modayur, "Three Dimensional Finite Element Analysis of Matrix Cracks in Multidirectional Composite Laminates," M.S. Thesis, Department of Mechanical Engineering, Montana State University, 1993. [PDF]

Creed, Richard, "High Cycle Tensile Fatigue of Unidirectional Fiberglass Composite Tested at High Frequency," M.S. Thesis, Department of Chemical Engineering, Montana State University, 1993. [PDF]

Reed, Robert, "Long Term Fatigue of Glass Fiber Reinforced Composite Materials for Wind Turbine Blades," M.S. Thesis, Department of Chemical Engineering, Montana State University, 1991. [PDF]

updated 06/19/2013 11:02 AM

Web page problems/ comments: contact Daniel Samborsky at

Daniels@coe.montana.edu

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