Some considerations of the performance of two honeycomb gas path seal material systems

A standard Hastelloy-X honeycomb material and a pack aluminide coated honeycomb material were evaluated as to their performance as labyrinth seal materials for aircraft gas turbine engines. Consideration from published literature was given to the fluid sealing characteristics of two honeycomb materials in labyrinth seal applications, and their rub characteristics, erosion resistance, and oxidation resistance were evaluated. The increased temperature potential of the coated honeycomb material compared to the uncoated standard could be achieved without compromising the honeycomb material's rub tolerance, although there was some penalty in terms of reduced erosion resistance

Friction and wear of sintered fiber-metal abradable seal materials

Three abradable gas path seal material systems based on a sintered NiCrAlY fibermetal structure were evaluated under a range of wear conditions representative of those likely to be encountered in various knife-edge seal (labyrinth or shrouded turbine) applications. Conditions leading to undesirable wear of the rotating knife were identified and a model was proposed based on thermal effects arising under different rub conditions. It was found, and predicted by the model, that low incursion (plunge) rates tended to promote smearing of the low density sintered material with consequent wear to the knife-edge. Tradeoffs benefits between baseline 19 percent dense material, a similar material of increased density, and a self lubricating coating applied to the 19 percent material were identified based on relative rub tolerance and erosion resistance

Differential Scanning Calorimetry (DSC) Analyses Of Superelastic And Nonsuperelastic Nickel-Titanium Orthodontic Wires

The purpose of this study was to determine the transformation temperatures for the austenitic, martensitic, and rhombohedral (R) structure phases in representative as-received commercial nitinol (NiTi) orthodontic wire alloys, to reconcile discrepancies among recent publications. Specimens were examined by differential scanning calorimetry (DSC) over a temperature range from approximately −170° C to 100° C, with a scanning rate of 10° C per minute. Two different pathways, with the intermediate R structure either absent or present, were observed for the transformation from martensitic to austenitic NiTi, whereas the reverse transformation from austenitic to martensitic NiTi always included the R structure. The enthalpy (ΔH) for the transformation from martensite to austenite ranged from 0.3 to 35 calories per gram. The lowest ΔH value for the nonsuperelastic Nitinol wire is consistent with a largely work-hardened, stable, martensitic microstructure in this product. The DSC results indicate that the transformation processes are broadly similar in superelastic, body-temperature shape-memory, and nonsuperelastic NiTi wires. Differences in bending properties for the NiTi orthodontic wires at room temperature and 37° C are due to the relative proportions of the metallurgical phases in the microstructures

OT 520 Foundations for Old Testament Study

1. LaSor, W. S., David Allan Hubbard, and Frederic Wm. Bush. Old Testament Survey: The Message, Form, and Background of the Old Testament. 2 d ed.; Grand Rapids, MI: Eerdmans, 1996. 2. Walton, John H., and Victor H. Matthews. The IVP Bible Background Commentary: Genesis-Deuteronomy. Downers Grove, IL: InterVarsity Press, 1997. 3. Alexander, T. Desmond. From Paradise to the Promised Land. An Introduction to the Main Themes of the Pentateuch. Carlisle: Paternoster, 1995. 4. Baker, David W., and Bill T. Arnold. The Face of Old Testament Studies: A Survey of Contemporary Approaches. Grand Rapids, MI: Baker, 1999.https://place.asburyseminary.edu/syllabi/1542/thumbnail.jp

OT 705 Biblical Aramaic

Brown, Francis, S. R. Driver, and Charles A. Briggs. A Hebrew and English Lexicon of the Old Testament. Oxford: Oxford University Press, 1907. Repr., Peabody, Mass.: Hendrickson, 1979. Elliger, K., and W. Rudolph. Biblia Hebraica Stuttgartensia. Stuttgart: Deutsche Bibelgesellschaft, 1967-1977. Rosenthal, Franz. A Grammar of Biblical Aramaic. 6th ed. Wiesbaden: Harrassowitz, 1995. Course Packet available in the bookstore (see appendix below for contents).https://place.asburyseminary.edu/syllabi/2076/thumbnail.jp

OT 520 A Old Testament Introduction

Required Readings Assigned readings from the following required texts are listed on pages 4-5 below. Information from these readings will enhance the student’s comprehension of the lecture and research topics, so it is expected they will be read systematically during the process of the semester. A report on their completion will be submitted as part of the final examination. LaSor, W. S., David Allan Hubbard, and Frederic Wm. Bush. Old Testament Survey: The Message, Form, and Background of the Old Testament. 2nd ed. Grand Rapids, Mich.: Eerdmans, 1996. Coogan, Michael David, editor. The Oxford History of the Biblical World. New York: Oxford University Press, 1997. In general, ATS expects students “to invest two and one-half (2.5) to three (3.0) hours of work per week outside of class in preparation for every hour of credit to be earned” (ATS Catalog, 2001-2003, p. 25). In other words, you should spend approximately 7.5 to 9 hours of work per week on this class, in addition to the 2.5 hours of in-class time we spend together. If you find yourself spending significantly greater amounts of time, please see the instructor. � Recommended Collateral Readings Students should select one of the following recommended texts for the book review assignment. Alexander, T. Desmond. From Paradise to the Promised Land: An Introduction to the Main Themes of the Pentateuch. Carlisle: Paternoster, 1995. Baker, David W., and Bill T. Arnold, eds. The Face of Old Testament Studies: A Survey of Contemporary Approaches. Grand Rapids, Mich.: Baker Book House, 1999. Felder, Cain Hope, ed. Stony the Road We Trod: African American Biblical Interpretation. Minneapolis: Fortress, 1991. Newsome, Carol A., and Sharon H. Ringe, eds. Women’s Bible Commentary (expanded edition). Louisville, Ky.: Westminster John Knox, 2003. Perdue, Leo G., ed. The Blackwell Companion to the Hebrew Bible. Oxford: Blackwell, 2001.https://place.asburyseminary.edu/syllabi/1384/thumbnail.jp

OT 520 Old Testament Introduction

LaSor, William S., David Allan Hubbard, and Frederic Wm. Bush. Old Testament Survey: The Message, Form, and Background of the Old Testament. 2nd ed.; Grand Rapids, Mich.: Eerdmans, 1996 Coogan, Michael David, editor. The Oxford History of the Biblical World. New York: Oxford University Press, 1997 Alexander, T. Desmond. From Paradise to the Promised Land: An Introduction to the Pentateuch. Second Edition. Grand Rapids, MI: Baker, 2002.https://place.asburyseminary.edu/syllabi/2442/thumbnail.jp

OT 706 Semitic Language Seminar

Required: Gogel, Sandra Landis. A Grammar of Epigraphic Hebrew. Atlanta: Scholars Press, 1998. Recommended: Parker, Simon B. Stories in Scripture and Inscriptions: Comparative Studies on Narratives in Northwest Semitic Inscriptions and the Hebrew Bible. Oxford: Oxford University Press, 1997. Garr, W. Randall. Dialect Geography of Syria-Palestine, 1000-586 B.C.E. University of Pennsylvania Press, 1985.https://place.asburyseminary.edu/syllabi/3240/thumbnail.jp

OT 701 Biblical Aramaic

Brown, Francis, S. R. Driver, and Charles A. Briggs. A Hebrew and English Lexicon of the Old Testament. Oxford: Oxford University Press, 1907. Repr., Peabody, Mass.: Hendrickson, 1979. Elliger, K., and W. Rudolph. Biblia Hebraica Stuttgartensia. Stuttgart: Deutsche Bibelgesellschaft, 1967-1977. Rosenthal, Franz. A Grammar of Biblical Aramaic. 6th ed. Wiesbaden: Harrassowitz, 1995. Course Packet available in the bookstore (see appendix below for contents).https://place.asburyseminary.edu/syllabi/2803/thumbnail.jp