107,605 research outputs found
[Report from H. H. Stringer to Chief J. E. Curry, concerning the arrest of Lee Harvey Oswald #2]
No full textReport written by H. H. Stringer to Chief J. E. Curry concerning the arrest of Lee Harvey Oswald. Stringer describes searching a pickup truck in the alley behind the Texas Theater
[Report from H. H. Stringer to Chief J. E. Curry, concerning the arrest of Lee Harvey Oswald #1]
No full textReport written by H. H. Stringer to Chief J. E. Curry concerning the arrest of Lee Harvey Oswald. Stringer describes searching a pickup truck in the alley behind the Texas Theater
[Report by Sergeant of Police H. H. Stringer to Chief of Police J. E. Curry, December 3, 1963 #3]
No full textReport from Sergeant of Police H. H. Stringer to Chief of Police J. E. Curry, describing his participation in the arrest of Lee Harvey Oswald
George H. Stringer
Get PDFGeorge H. Stringer on Farmhttps://scholarsjunction.msstate.edu/ua-photo-collection/9765/thumbnail.jp
Ariosoma nonsector - Nolf & Stringer 2003
No full textAriosoma nonsector Nolf & Stringer, 2003 Fig. 69 G–H Otolithus (Platessae) sector Koken, 1888: 292, pl. 17, figs 5–16. Ariosoma sp. – Stringer 1979: 102, pl. 1, fig. 4; 1986: 213, pl. 3, fig. 2. Ariosoma nonsector – Nolf & Stringer 2003: 7, pl. 2, figs 1a–6. — Nolf 2003: 3–4, pl. 1, figs 3–4; 2013: 35–37, pl. 21. Material examined UNITED STATES OF AMERICA – Alabama • 11 otoliths; GLS otolith comparative collection (10 specimens), MSC 39069. Description Species characterized by massive otoliths; height nearly the same as the length, with height/length ratios ranging from 80–86%. Margins typically smooth. Ostial rim slightly concave, most specimens exhibiting some concavity at posterodorsal rim. Posterior margin tends to taper. Ventral rim broadly rounded, marked by distinctive angular central position. Inner face mainly smooth, convex, except for some irregular depressions in upper portion of dorsal area. Sulcus wide, only slightly incised. Sulcus extends from very near anterior margin to posterior (about 85% of sagitta length). Sulcus entirely filled with colliculum, except for dorsal extremity of ostial channel. No clear division of ostial and caudal portions of sulcus. Posterior end of sulcus broadly tapered but showing some widening ventrally. No indications of ventral furrow. Outer face smooth, convex except for area near posterior end, where shallow dorsoventrally oriented depression occurs. Remarks This species and Paraconger sector (see below) were originally described as one species by Koken (1888), but Ariosoma nonsector was separated by Nolf & Stringer (2003). This taxon is known from middle and upper Eocene deposits in Alabama, Louisiana, Mississippi, and Virginia in the USA, and it occurs in lower Oligocene (Rupelian) strata of Alabama, Louisiana, and Mississippi. Stratigraphic and geographic range in Alabama Ariosoma nonsector is known only from the “upper” Lisbon Formation at sites ACh-8 and ACl-4. The lack of A. nonsector in the Gosport Sand may be related to the very sandy nature of the formation or the lack of extensive bulk sampling. Bartonian, zones NP16 and NP17.Published as part of Ebersole, Jun A., Cicimurri, David J. & Stringer, Gary L., 2019, Taxonomy and biostratigraphy of the elasmobranchs and bony fishes (Chondrichthyes and Osteichthyes) of the lower-to-middle Eocene (Ypresian to Bartonian) Claiborne Group in Alabama, USA, including an analysis of otoliths, pp. 1-274 in European Journal of Taxonomy 585 on pages 189-190, DOI: 10.5852/ejt.2019.585, http://zenodo.org/record/366025
Boys with a stringer of fish, Corpus Christi, Texas, 1913
No full textPhotograph shows boys with a stringer of over 30 fish. Harold H. Arnold (far left)" Small boys (center) are thought to be Raymond and Milton Zirkel. Taken on North Beach with Beach Hotel in the background (right).Inscription:""Aug 1913.
Skin-stringer separation in post-buckling of butt-joint stiffened thermoplastic composite panels
Get PDFTwo aeronautical thermoplastic composite stiffened panels are analysed and tested to investigate the buckling behaviour, the skin-stringer separation and the final failure mode. The panels are made of fast crystallising polyetherketoneketone carbon composite, have three stringers with an angled cap on one side, and are joined to the skin by a short-fibre reinforced butt-joint. The panels contain an initial damage in the middle skin-stringer interface representing barely visible impact damage. Finite element analysis using the virtual crack closure technique are conducted before the test to predict the structural behaviour. During the tests, the deformation of the panels is measured by digital image correlation, the damage propagation is recorded by GoPro cameras and the final failure is captured by high speed cameras. The panels show an initial three half-wave buckling shape in each bay, with damage propagation starting shortly after buckling. A combination of relatively stable and unstable damage propagation is observed until final failure, when the middle stringer separates completely and the panels fail in an unstable manner. The test results are compared to the numerical prediction, which shows great agreement for both the buckling and failure behaviour
Design and Analysis of Composite Panels
No full textEuropean aircraft industry demands for reduced development and operating costs, by 20% and 50% in the short and long term, respectively. Contributions to this aim are provided by the completed project POSICOSS (5thFP) and the running follow-up project COCOMAT (6thFP), both supported by the European Commission. As an important contribution to cost reduction a decrease in structural weight can be reached by exploiting considerable
reserves in primary fibre composite fuselage structures through an accurate and reliable simulation of postbuckling up to collapse. The POSICOSS team developed fast procedures for postbuckling analysis of stiffened fibre composite panels, created comprehensive experimental data bases and derived design guidelines. COCOMAT builds up on the POSICOSS results
and considers in addition the simulation of collapse by taking degradation into account. The results comprise an extended experimental data base, degradation models, improved certification and design tools as well as design guidelines.
The projects POSICOSS and COCOMAT develop improved tools which are validated by experimental results obtained during the projects. Because the new tools must consider a wide range of different aspects a lot of different structures had to be tested. These structures were designed under different design objectives. For the design process the consortium applied already
available simulation tools and brought in their own design experience. This paper deals with the design process within both projects and the analysis procedure applied within this task. It focuses on the experience of DLR on the design and analysis of stringer stiffened CFRP panels gained in the frame of these projects
Dissimilar titanium-aluminum skin-stringer joints by FSW: process mechanics and performance
No full textEver since its inception, friction stir welding (FSW) is being validated by scientific investigations as an effective substitution for fusion-based conventional joining technologies. One of the main strengths of FSW is the possibility to produce dissimilar joints, even using materials extremely different in terms of thermal and mechanical properties. The goal of the present research is to investigate the feasibility of both Al-Ti skin-stringer and reversed Ti-Al skin-stringer joints, highlighting the effect of joint configuration and main process parameters on material flow and joint mechanical properties. During the investigation, the essentiality of the proper heat input through balancin
- …
