Interview with Larry Hall

Larry Hall, an OSU extension and 4-H agent for Knox County tells the interviewer about growing up in the 4-H community and coming back after being in the Navy to serve as a 4-H advisor. He also discusses the large role that 4-H plays in their community, and how important it is to get youths involved and help them grow as people.https://digital.kenyon.edu/ffp_interviews/1008/thumbnail.jp

Interview on The Grange and Community Life

The Crafts, and Larry Algire discuss the Grange, which is a fraternal order of farmers founded in secret in 1868. Specifically, they discuss Wayne Grange, which was founded in 1873. The Grange system has masters, overseers and stewards as its leadership structure. They also discuss what the Grange does for the community, including square dances, and helping out the farm community.https://digital.kenyon.edu/ffp_interviews/1039/thumbnail.jp

The Oxidation of the HiSiMo Cast Irons Alloyed with Cr/Al at 800 °C

To improve the oxidation resistance of cast iron containing Si and Mo (HiSiMo), 1wt.% Cr and 3wt.% Al were added into the base alloy to improve high temperature oxidation resistance for exhaust manifold applications. Oxidation tests were performed in both dry and wet air (air + 10% H2O) at 800 °C for 1, 10, 24, and 50 h. The mass change and oxide thickness were measured to evaluate the oxidation resistance. Scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDS) and transmission electron microscopy (TEM) were employed to characterize the oxidized samples. The results showed that the additions of Al or Cr selectively oxidized to form a more oxidation resistant surface oxide layer, which reduced the mass gain during these experiments

Nonmonotonic Effect Of Chemical Heterogeneity On Interfacial Crack Growth At High-angle Grain Boundaries In Fe-Ni-Cr Alloys

An intermittent pattern is observed in the modeling of interfacial cyclic-loading crack growth at high-angle grain boundaries in ternary Fe-Ni-Cr alloys. Different from conventional wisdom of stress-intensity factor, the abrupt crack advances are found driven by extreme value statistics - namely, the aggregation of atoms with most compressive residual stresses. In addition, inherently non-affine atomic stress fluctuations are discovered, and the fluctuations peak at intermediate level of chemical heterogeneity, causing the fastest crack growth. Implications of such nonmonotonic mechanism in regard to the origin of intermediate-temperature embrittlement phenomena are also discussed

The Software Decommutation Model (SDM)

ITC/USA 2009 Conference Proceedings / The Forty-Fifth Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2009 / Riviera Hotel & Convention Center, Las Vegas, NevadaIt is well known that current PCM telemetry formats are outstripping the capability of commercial off-the-shelf (COTS) Telemetry Systems to implement the corresponding data conversions required to process them. Two complementary approaches are needed for solving this problem: one is to put end users into direct touch with the information stored in telemetry streams; and the other is to convert telemetry applications into this new way of doing things. It is less known that a single technology, software decommutation, provides a practical foundation for both approaches. This document explains why this is so. While developing this software decommutation theme, a very sharp line must be drawn between a software decommutation approach and the COTS telemetry systems solution so that the label "software decommutation" will not be used in misleading ways. The key to drawing this line is SDM's (Software Decommutation Model) ability to: * Extract bits from the raw telemetry stream into 64-bit parameter "containers" in a platform independent ("big endian" or "little endian") manner. * Process algorithms in an algorithm chain on telemetry parameter data to support the desired formatting (i.e. engineering unit conversion). * Easily integrate "special" processing of non-IRIG 106 telemetry data as required (i.e. multiple embedded streams, mode changes, embedded packetized data, etc.). * Independently interface to user-developed data displays locally or via a network connection. *Note: The SDM cannot process a PCM stream directly; to do its job, a databridge is required that provides telemetry data as frame aligned IP packets via a network port.International Foundation for TelemeteringProceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection

Building comprehensive narratives from dialogical encounters: A path in search of meanings

Abstract Phenomenological investigations are concerned with unfolding the nature of a phenomenon through the process of describing and understanding subjective lived experiences. The process through which this is accomplished varies according to the underlying philosophical concepts and specific methodological strategies adopted. A common means of achieving this objective is through hours-long interviews that are recorded and later transcribed and analyzed. The present article describes an alternative method that accesses the participants’ experiences of a phenomenon through encounters with a researcher, who then uses dialogical data to develop comprehensive narratives. These are written in first person in order to grasp the participant’s significant meanings based on what emerged during their encounter and its impact on the researcher. A narrative synthesis is then constructed in order to enable the phenomenological process of analysis to reach the structural elements based on all participants’ experiences. Exemplary excerpts are presented in order to illustrate the process

The Effect of Metal-Carbide Morphology on the Thermomechanical Fatigue (TMF) Behavior of Cast Austenitic Alloys for Exhaust Manifolds

AbstractOut-of-phase thermomechanical fatigue (OP-TMF) tests between 600°C and 950°C have been conducted for three cast austenitic alloys with different metal-carbide (MC) morphologies: dense skeleton, sparse skeleton and blocky carbides. The alloy with dense skeleton-like MC exhibited longer TMF life than the other two, even though their chemical composition and casting process were similar. Fractography analysis indicated that the fatigue cracks initiated from the specimen surface for all the alloys in this study. The morphology of Nb(C,N) has an obvious effect on inelastic deformation. Alloys with skeleton-like Nb(C,N) precipitates have better ductility as compared to alloys with isolated blocky precipitates. Dense skeleton-like Nb(C,N) is found to delay OP-TMF crack initiation and propagation, resulting in longer TMF lives

The Oxidation of the HiSiMo Cast Irons Alloyed with Cr/Al at 800 °C

To improve the oxidation resistance of cast iron containing Si and Mo (HiSiMo), 1wt.% Cr and 3wt.% Al were added into the base alloy to improve high temperature oxidation resistance for exhaust manifold applications. Oxidation tests were performed in both dry and wet air (air + 10% H2O) at 800 °C for 1, 10, 24, and 50 h. The mass change and oxide thickness were measured to evaluate the oxidation resistance. Scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDS) and transmission electron microscopy (TEM) were employed to characterize the oxidized samples. The results showed that the additions of Al or Cr selectively oxidized to form a more oxidation resistant surface oxide layer, which reduced the mass gain during these experiments