An Acoustic Emission and Artificial Intelligence Approach to Structural Health Monitoring for Aerospace Application

In the area of aerospace and other applications, structural health monitoring (SHM) has been a significant and growing area of research in recent years. Throughout the operational life of aerospace structures, various damage scenarios may manifest, and it is of great concern to the aerospace community to develop methodologies for detecting and assessing these damage scenarios. In this paper, fundamental research on the use of the acoustic emission (AE) approach to SHM for fatigue crack growth is presented. In general, the AE approach to SHM and non-destructive evaluation (NDE) involves the sensing of ultrasonic Lamb waves propagating through a structure. Piezoelectric wafer active sensors (PWAS) have proven to be an effective tool in sensing these ultrasonic Lamb waves. The goal of this research was to conduct fundamental investigations into the use of PWAS for AE sensing of fatigued aerospace-grade aluminum 2024-T3 and the use of artificial intelligence approaches for AE signal classification efforts. The signal classification efforts presented in this thesis involve: (i) locating the source of the acoustic emission (source localization); (ii) determining whether an AE signal sensed is crack-related or noise; (iii) determining the crack length from which an AE originates. Ultimately, it is hypothesized and desired that the techniques developed in this paper and similar literature may be applied to production efforts of aerospace structures to identify and locate damage, optimize aircraft maintenance efforts, and prevent disastrous failure

A cadaveric case study on lung cancer pathology

INTRODUCTION: Lung cancer is the most commonly diagnosed cancer amongst both genders, currently accounting for about 18% of all cancer deaths. OBJECTIVES: The overall purpose of this study was to evaluate the pathology associated with the patient’s cause of death, cardiorespiratory failure and lung cancer. The secondary aims of this study were to confirm the presence of malignant neoplasms within a human cadaver, determine the type of cancer present, and take specimens for histological examination to evaluate the patient’s cause of death. METHODS: This is a case report from one of the cadavers in the Gross Anatomy laboratory at the Philadelphia College of Osteopathic Medicine, South Georgia campus. Samples were taken from the patient’s lungs and then sent to the Colquitt Regional Medical Center laboratory for histopathological processing. RESULTS: Histopathological analysis of the lungs demonstrated a non-small cell carcinoma of the adenocarcinoma type with acute bronchopneumonia, pulmonary edema and congestion. The pneumonia was probably due to the weakened immune system caused by the adenocarcinoma. Anthracotic pigment in dust cells was also seen histologically, suggesting the patient may have been a smoker or lived in a heavily polluted area. CONCLUSION: The histopathological evaluation of the patient provided a valuable lens into the incidence of lung cancer contributing to secondary pathologies associated with cause of death

The Effects of Blood Flow Restriction Training on Measures of Strength and Body Composition in College Age Females

Blood flow restriction (BFR) training is a non-invasive technique that uses wraps, bands, or inflated blood pressure cuffs to alter blood flow within targeted muscles. BFR has been seen as a means to potentially help people build muscle mass and strength faster while they are exercising. PURPOSE: The purpose of this study was to compare the body composition and strength changes resulting from traditional resistance training without BFR to the changes resulting from resistance training combined with BFR. METHODS: 21 females with at least one year of resistance training experience were recruited to participate in the study. Participants were randomly split into two different groups: occluded (OC) and non-occluded (NOC). Each participant was provided with a 4 days/week training protocol for 8 weeks of total training under either OC or NOC conditions. Participants underwent a DEXA scan, thigh girth measurement, blood draw pre- and post-workout, one-repetition max testing, and an acute bout of lower extremity exercise using a hammer strength leg press at weeks 0, 4, and 8. Participants assigned to the OC group had their 50% occlusion percentage determined during each testing session and were required to utilize BFR cuffs during all training sessions with 50% occlusion on all lower extremity exercises. RESULTS: Data are presented as change over time. After data analysis, there was a statistically significant time effect between pre- and post-performance testing on muscular strength (OC = 124 ± 54, NOC = 171 ± 43, p = 0.00) and body fat (OC = -1.517 ± 1.377, NOC = -1.138 ± 1.544, p = 0.022). However, there was no significant difference between groups (p \u3e 0.05). There was no time or interaction effect for weight (OC = 0.627 ± 0.946, NOC = 0.725 ± 1.414, p = 0.183) or thigh girth (OC = 0.514 ± 1.137, NOC = -0.369 ± 2.022, p = 0.146). CONCLUSION: Eight weeks of lower-body BFR training at 50% occlusion does not appear to have an added effect on measures of muscular strength or body composition in resistance-trained females

Concert recording 2019-11-12

[Track 1]. Epitaph VI: Phoenix rising / Martin Ellerby -- [Track 2]. Now hear this / Ray Dempsey -- [Track 3]. Air on the G string / J.S. Bach arranged by Goble -- [Track 4]. Four pieces. I. Andante tranquillo [Track 5]. II. Allegro vivace [Track 6]. III. Larghetto [Track 7]. IV. Allegro / Gordon Jacob -- [Track 8]. Bottoms up rag / Keith Mehlan -- [Track 9]. When tubas waltz / Alfred H. Bartles -- [Track 10]. Requiem for a dead little cat / Ernst-Thilo Kalke -- [Track 11]. Inertia / Kenyon Wilson -- [Track 12]. Tubasonatina. I. Sea chanty [Track 13]. II. Meditation [Track 14]. III. Dance / Thom Ritter George -- [Track 15]. Pavane, op. 50 / Gabriel Faure arranged by Wilson -- [Track 16]. Quartet for tubas. I. Allegro [Track 17]. II. Andante [Track 18]. III. Vivo / Frank Lynn Payne

Concert recording 2017-11-27

[Track 1]. Concert prelude / Derek Bourgeois -- [Track 2]. Tuba concerto / Edward Gregson -- [Track 3]. Cyberspace / Peter Graham -- [Track 4]. Concert piece no. 1 / Rodger Vaughan -- [Track 5]. Rhapsody for euphonium / Jerry Brubaker -- [Track 6]. Concerto, K. 191. I. Allegro / W.A. Mozart -- [Track 7]. The green hill / Bert Appermont -- [Track 8]. Suite / Vaclav Nelhybel -- [Track 9]. Brides of the waves / Herbert L. Clarke -- [Track 10]. Fantasy / Philip Sparke -- [Track 11]. Concerto for euphonium. I. Allegro moderato / Philip Wilby

Concert recording 2018-04-24b

[Track 1]. Six studies in English folksong. I. Adagio [Track 2]. II. Andante sostenuto [Track 3]. III. Andante tranquillo [Track 4]. IV. Allegro vivace / Ralph Vaughan Williams -- [Track 5]. Sonata in F minor. I. Andante [Track 6]. II. Allegro / G.F. Teleman -- [Track 7]. Allerseelen / Richard Strauss arranged by Stuckemeyer/Bottorf -- [Track 8]. Bride of the waves / Herbert L. Clarke -- [Track 9]. Suite. I. Allegor marcato [Track 10]. III. Allegretto [Track 11]. IV. Slow / Vaclav Nelhybel -- [Track 12]. A walk in the woods / Jiro Censhu -- [Track 13]. Concerto in one movement / Alexy Lebedev -- [Track 14]. By gaslight / Tadeusz Kassatti -- [Track 15]. Child\u27s play. I. ♩=132 / Barbara York

Concert recording 2017-03-06

[Track 1]. Triumph of the demon gods / John Stevens -- [Track 2]. Sonata in F minor. Andante cantabile / Georg Philipp Telemann -- [Track 3]. Sonata in F minor. Allegro / Georg Philipp Telemann -- [Track 4]. Sketches. Spirited / Michael McFarland -- [Track 5]. Sketches. Slow and expressive / Michael McFarland -- [Track 6]. Sonata for unaccompanied euphonium. Introduction and allegro / Fred Clinard -- [Track 7]. Sonata for unaccompanied euphonium. Song / Fred Clinard -- [Track 8]. Tuba concerto. Allegro moderato / Edward Gregson -- [Track 9]. Sonata 1 in F major. Largo Allegro / Benedetto Marcello -- [Track 10]. Suite for cello no. 4, BWV 1010. Bourree 1 Bourree II / Johann Sebastian Bach -- [Track 11]. Summer isles / Philip Sparke -- [Track 12]. Tuba suite. Prelude Hornpipe Sarabande Bourree Mazurka / Gordon Jacob -- [Track 13]. Soliloquy IX / Christopher Wiggins -- [Track 14]. Suite for unaccompanied tuba / Walter Hartley

Concert recording 2017-11-28

[Track 1]. Bill Bailey / Hughie Cannon arranged by James Garrett -- [Track 2]. Second suite. I. March [Track 3]. II. Song without words, I\u27ll love my love / Gustav Holst arranged by Cody Hutchison -- [Track 4]. Deutschland uber alles / Franz Joseph Haydn arranged by Eugene Anderson -- [Track 5]. Geleit from Three pieces / Johannes Brahms translated by William R. Lee -- [Track 6]. Belle of Chicago march / John Philip Sousa arranged by Skip Gray -- [Track 7]. Three preludes from op. 34. No. 14 [Track 8]. No. 7 [Track 9]. No. 16 / Dmitri Shostakovich arranged by Rauch -- [Track 10]. Tuba Sunday / traditional arranged by Gerald Sloan -- [Track 11]. Quartet for tubas / Sy Brandon -- [Track 12.] Cherokee / John Schooley -- [Track 13]. Moondance / John Stevens -- [Track 14]. Amazing grace / traditional arranged by David Uber

Marion County Heritage Map Project

With the soft opening of Pasaquan, Marion County’s visionary art environment, in summer 2016, and its grand opening by Columbus State University in fall 2016, the Marion County Chamber of Commerce requested that the Columbus Community Geography Center partner to develop a heritage tour map of the county for welcome centers across the state. This small rural county of 8,700 residences, 60% white, 30% black and 7.5% Hispanic. One fifth of the population live below the poverty level. It recently lost several hundred jobs with the closure of the local chicken processing plant. Plans to launch a tourism program is understood to be of great importance to the community. CSU’s Dr. Amanda Rees, Professor of Geography, and Professor Chuck Lawson, Department of Art, College of the Arts joined forces to create a heritage tour map of Buena Vista and Marion County. Geography students ran a community workshop to identify twenty-one county and city heritage sites for inclusion. They researched and wrote short descriptions for the map and extended histories for an accompanying web page to be accessed from the map with a QR code. Students also produced an accurate map of each site and the major roads and other primary physical features of the county and city. Graphic design students then received the map text and GIS maps of the county and the city. Students designed three “roughs” of the map for external review. The first review included Marion County leaders, state tourism representatives, and several faculty in art, GIS and geography. The roughs were then refined and presented again to a group of reviewers. This project proved to be a good fit for CSU’s QEP “Real World Problems Solving” project in its testing phase in spring 2016. This interdisciplinary “service learning” project offered high impact educational practices, fieldwork, student-led heritage workshop in Marion County, critical feedback from community members on writing, and design. This interdisciplinary project was aligned with CSU’s mission to support alternative pedagogical approaches to address the needs of millennial learners

Failures in transport infrastructure embankments

To ensure that road and rail transport networks remain operational, both highway and railway embankments require continual maintenance and renewal to mitigate against ongoing deterioration and repair any sections damaged by realised failures. This paper provides a review of recent developments in the understanding of highway and railway embankment degradation and failure. Failures due to pore water pressure increase, seasonal shrink-swell deformation and progressive failure are considered. The material composition and construction of highway and railway embankments differ, which influences the dominant type and timing of embankment failure. There is evidence for highway embankment failures induced by pore water pressure increase, but not seasonal deformation and progressive failure. Some railway embankments are susceptible to pore water pressure increase, seasonal shrink-swell deformation and progressive failure due to the age and nature of the dumped clay fill used in their construction. The approaches used to measure and explore embankment failure mechanisms are compared and discussed. Field observations have been used to understand pore water pressure increase and seasonal shrink-swell deformation in embankments, while the investigation of progressive embankment failure has mainly utilised physical and numerical modelling approaches. Further field and laboratory investigation is required before the rigorous analysis of embankment failure can be routinely undertaken. However, progress is being made to empirically identify and evaluate the various risk factors affecting transport infrastructure embankment failure