Hole interaction and load introduction effects for compression-loaded laminates with holes

The effects of hole interaction and load introduction for (+ or - 30/90) sub 8 (s) and (+ or - 45) sub 12 (s) laminates with holes was conducted. A hole interaction region was identified in some specimens, and this region was ineffective for carrying load. The membrane stiffness of a specimen with a hole interaction region is less than the membrane stiffness of a similar specimen without a hole interaction region. A load introduction effect that occurs on the sublaminate level was also observed. This effect can cause a nonuniform load diffusion into the interior of the specimen

The Value and Impact of Seminary Training

Interview by Joshua Shuart of R. Stephen Shuart, of Stephen Shuart Export Co. The Reverend R. Stephen Shuart is an Episcopal priest by profession. He is rector of two parishes and serves on the Diocesan Financial Committee and as a rural dean. However, he has spent most of his wage-earning life as owner/operator of Stephen Shuart Export Co., an internationally known photographic business, located in Kane, Pennsylvania. Shuart’s unique entrepreneurial endeavor has been the subject of a televised news feature, and the object of camera collectors’ attention since his company’s inception in the early 1970s

Tensile and compressive test results for metal matrix composites

Experimental results of the mechanical behavior of two metal matrix composite systems at room temperature are presented. Ultimate stress, ultimate strain, Poisson's ratio, and initial Young's Modulus are documented for BORSIC/Aluminum in uniaxial tension and Boron/Aluminum in uniaxial tension and compression. Poisson's ratio is used for nonlinear stress-strain behavior. A comparison of compression results for B/Al as obtained from sandwich beam compression specimens and IITRI coupon compression specimens is presented

Investigating compression failure mechanisms in composite laminates with a transparent fiberglass-epoxy birefringent materials

The response and failure of a + or - 45s class laminate was studied by transparent fiberglass epoxy composite birefringent material. The birefringency property allows the laminate stress distribution to be observed during the test and also after the test if permanent residual stresses occur. The location of initial laminate failure and of the subsequent failure propagation are observed through its transparency characteristics. Experimental results are presented

Endorser Source Credibility: Redefining Spokesperson Influence Through Development of the Celebrity-Hero Matrix

Endorsement of sport and non-sport products by athletes is an extremely popular method that corporations use to drive sales and advertising. Traditionally, celebrity endorsement research has focused on the physical attractiveness of the endorser; while this makes sense, it provides only a partial explanation why consumers purchase athlete-endorsed products. Several other components of source credibility, as well as previously unexplored elements such as heroic traits, prove to be stronger predictors of intent-to-purchase. A 3-phase research study of Americans aged 18-35 was conducted, with a Celebrity-Hero Matrix© (CHM) developed and several marketing recommendations made based on the findings

The Playmasters (Book Review)

Book review by Joshua Shuart. Ham, Eldon L. The Playmasters: From Sellouts to Lockouts-An Unauthorized History of the NBA. Lincolnwood, IL: Contemporary Books, 2000. ISBN 978080922602

On Poisson's ratio for metal matrix composite laminates

The definition of Poisson's ratio for nonlinear behavior of metal matrix composite laminates is discussed and experimental results for tensile and compressive loading of five different boron-aluminum laminates are presented. It is shown that there may be considerable difference in the value of Poisson's ratio as defined by a total strain or an incremental strain definition. It is argued that the incremental definition is more appropriate for nonlinear material behavior. Results from a (0) laminate indicate that the incremental definition provides a precursor to failure which is not evident if the total strain definition is used

Framebuilder Entrepreneurship

The handmade bicycle industry has grown exponentially over the past decade. Although existing for decades in much smaller numbers, the popularity and credibility of framebuilder entrepreneurship —custom, handmade bike frames—has increased significantly in the past 10 years. The companies that specialize in custom-producing bicycle frames vary in size, scope, reputation, profitability, and even building materials