• Title/Summary/Keyword: Notched Body

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Static Tensile Strength Evaluation of Notched Coeposite Materials (노치를 갖는 복합재료의 정적강도평가(I))

  • 김윤해;김영식;서곡홍신
    • Journal of Ocean Engineering and Technology
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    • v.7 no.2
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    • pp.19-29
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    • 1993
  • The static tensile tests of GFRP, ID300, CFRID300 and CFRPEEK were made on the plain and notched specimens at room temperature. The results were discussed based on linear notch mechanics which was proposed by H.Nistani. The fracture of notched GFRP, ID300, CFRID300 and CFRPEEK specimens is controlled by the elastic maximum stress, $({\sigma}_max)$, and the notch root racius,$\rho$, alone, independently of the other geometrical conditions. The relation between fracture nominal stress,$({\sigma}_max)$, and stress concentration factor, $K_t$ and a part where $({\sigma}_c)$ is nearly constant independent of $K_t$. A similar phenomenon can be seen in the fatigue tests of notched specimes under rotating bending or push-pull. The almost constant $({\sigma}_c)$ values correspond to the nearly constant apparent stress intensity factor, $K_{1pc}$ values, obtained by assuming ,$\rho$=0. This can be attributed to the existence of the stable crack. Linear notch mechanics is very useful for analyzing the static tensile fracture behavior of notched GFRP, ID300, CFRPEEK specimens.

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Weight Functions for Notched Structures with Anti-plane Deformation

  • An, Deuk-Man;Son, In-Ho
    • International Journal of Precision Engineering and Manufacturing
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    • v.8 no.3
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    • pp.60-63
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    • 2007
  • Weight functions in fracture mechanics represent the stress intensity factors as weighted averages of the externally impressed boundary tractions and body forces. We extended the weight function theory for cracked linear elastic materials to calculate the notch stress intensity factor of a notched structure with anti-plane deformation. The well-known method of deriving weight functions by differentiation cannot be used for notched structures. By combining an appropriate singular field with a regular field, we derived weight functions for the notch stress intensity factor. Closed expressions of weight functions for notched cylindrical bodies are given as examples.

The Visual Effect in Combination of Details on the Maternity Clothes of One-piece type (원피스드레스형 임부복의 형태구성요인의 조합에 따른 시각효과)

  • 정영아;김옥진
    • Korean Journal of Human Ecology
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    • v.2 no.2
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    • pp.49-62
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    • 1999
  • The purpose of this study is to evaluate the combination of details on the maternity clothes of one-piece type through visual evaluation which helps compensating pregnant women's body defects for their more attractive fashion styles. The data evaluated by a multiple ranking test were analyzed by mean, paired t-test, general linear models procedure and Duncan's multiple ranged test. The result are as follows : 1) The pregnant woman wearing the one-piece dress with notched collar, pleats and whole button looks longer in lower part of bodies, smaller in upper body, slimmer, have less appeared bust and abdomen, more balanced as a Whole than when wearing others. And also, it makes a pregnant woman be seen more refined and simple. 2) In case of a pregnant woman, a one-piece dress with notched collar, tuck and whole button makes her look longer in neck, narrower in shoulder, and more active than when wearing others. 3) With roll collar, pleats and whole button, it looks taller and more graceful than when wearing others.

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A case of fatal hyperinfective strongyloidiasis with discovery of autoinfective filariform larvae in sputum

  • KIM Jin;JOO Hyun-Soo;KO Hyang-Mi;NA Min-Sik;HWANG Sun-Ho;IM Jong-Cheol
    • Parasites, Hosts and Diseases
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    • v.43 no.2 s.134
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    • pp.51-55
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    • 2005
  • The autoinfective filariform larva of Strongyloides stercoralis causes hyperinfection in immunosuppressed hosts. Here we report on the case of a male patient who was admitted to the emergency room at Gwangju Veterans Hospital with a complaint of dyspnea, and who was receiving corticosteroid therapy for asthma. Many slender larvae of S. stercoralis with a notched tail were detected in Papanicolaou stained sputum. They measured $269\pm21.2{\mu}m$ in length and $11\pm0.6{\mu}m$ in width. The esophagus extended nearly half of the body length. The larvae were identified putatively as autoinfective third-stage filariform larvae, and their presence was fatal. The autoinfective filariform larva of S. stercoralis has not been previously reported in Korea.

Chinoperla rhododendrona, a New Species of Perlidae (Insecta: Plecoptera) from Vietnam

  • Cao, Thi Kim Thu;Bae, Yeon-Jae
    • Animal cells and systems
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    • v.11 no.2
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    • pp.125-128
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    • 2007
  • A new perlid stonefly, Chinoperla rhododendrona n. sp., is described from a tropical mountain stream in central Vietnam. The male adult of this species can be characterized by the strongly setous body and unique L-shaped genital structure. The female adult can be distinguished by the posteromedially sclerotized and widely notched subgenital plate. The egg is unique among its congeners as it has smooth chorion and long and narrow collar. Illustrations of diagnostic characters are provided.

Preference and Fitness of Jackets by Body Shape: Focused on the Female University Students

  • Jeong, Jinah;Choi, Heisun;Choi, Jeongwook
    • Journal of Fashion Business
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    • v.18 no.3
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    • pp.104-116
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    • 2014
  • This study investigated the jacket preferences and actual fit according to body image perception of female university students in their early twenties, using a survey questionnaire method to analyze areas of dissatisfaction and improvements based on wearing experience. On the relationship between jacket and body image perception, female students with poor body image expressed the highest rate of "not satisfied" with purchase, which was significant. On buying preferences, the "Internet" was the primary place of purchase and "design" of jacket had highest consideration on the decision to buy. "Princess with a cinched - in waist" was the most preferred silhouette, and the most preferred length was "below the hip line." The most preferred cut was "basic," a jacket with a "tailored-collar of notched lapel shape," and "2-buttons." On discomfort and improvement of jacket fitness, students were most dissatisfied with "arm hole." The studies of production of a jacket which fitness and activities is both considered for female university students in their early twenties who use clothes to make them look more like their ideal body image.

A Study on the Processing of Anti-Corrosive Composites for Propeller Shaft of the Ship and the Evaluation of Its Static and Fatigue Properties (선박용 프로펠러축 방식처리용 복합재료의 제조와 그 정적 및 피로특성 평가에 관한 연구)

  • 김윤해;왕지석;배창원
    • Journal of Ocean Engineering and Technology
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    • v.12 no.1
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    • pp.23-31
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    • 1998
  • Kind 1 propeller shaft in ships is the shaft which is provided with effective measures against corrosion by sea water, or the shaft which is made of approved corrosion resistance materials. The propeller shaft other than specified above is Kind 2. Thus, this study is mainly concerned with the resistance to fatigue damage in sea water against stress concentrations due to the notches. The results obtained can be summarized as follows; (1) The stress increases with curing time, however, when the curing time reaches at 96 hours the stress becomes a constant value. The elongation decreases with curing time, however, when the curing time reaches at 48 hours the elongation becomes a constant value. Thus, in case of FRP coating on propeller shaft, it is necessary to cure for 48 hours at least. (2) The relation of $\sigma$$_n$-K$_t$ is to be classified into two parts, which is a part where fracture nominal stress, $\sigma$$_n$, decreases with increasing $K_t$, and a part where $\sigma$$_n$ is nearly constant independent of $K_t$. (3) According to a linear notch mechanics, the measure of severity controlling the fracture in notched FRP body is the notch root radius, $\rho$. The notched static strength of an arbitrary specimen will be estimated from $\sigma$$_{max}$ -1/$\rho$ curve. (4) Through the observation of cross section after fatigue test, the part of interface was kept good condition irrespective of loading conditions.

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A case of gastric strongyloidiasis in a Korean patient

  • Kim, Jin;Joo, Hyun-Soo;Kim, Doo-Hong;Lim, Ho;Kang, Yu-Ho;Kim, Myung-Soo
    • Parasites, Hosts and Diseases
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    • v.41 no.1
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    • pp.63-67
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    • 2003
  • A 69-year-old Korean man was admitted to emergency room with complaints of abdominal pain, vomiting, and diarrhea, Laboratory tests revealed eosinophilia, anemia, hypoproteinemia, and hyponatremia. The gastric mucosa showed whitish mottled and slightly elevated lesions on the body angle of antrum. Microscopically, chronic gastritis with incomplete intestinal metaplasia was observed. Many adult worms, larvae, and eggs in cross sections were located in the crypts. Furthermore, the filariform larvae of Strongyloides stercoralis with a notched tail were detected through the culture.

Weight Function Theory for a Mode III Crack In a Rectilinear Anisotropic Material (가중함수이론을 이용한 선형이방성재료에서의 Mode III 균열해석)

  • An, Deuk-Man;Kwon, Sun-Hong
    • Journal of Ocean Engineering and Technology
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    • v.23 no.1
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    • pp.146-151
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    • 2009
  • In this paper, a weight function theory for the calculation of the mode III stress intensity factor in a rectilinear anisotropic body is formulated. This formulation employs Lekhnitskii's formalism for two dimensional anisotropic materials. To illustrate the method used for the weight function theory, we calculated the mode III stress intensity factor in a single edge-notched configuration.

Backbone hydrogen bonding interaction of the inactive isoform of type III antifreeze proteins studied by 1H/15N-HSQC spectra

  • Seo-Ree, Choi;Sung Kuk, Kim;Jaewon, Choi;Joon-Hwa, Lee
    • Journal of the Korean Magnetic Resonance Society
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    • v.26 no.4
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    • pp.46-50
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    • 2022
  • Antifreeze proteins (AFPs) bind to the ice crystals and then are able to inhibit the freezing of body fluid at subzero temperatures. Type III AFPs are categorized into three subgroups, QAE1, QAE2, and SP isoforms, based on differences in their isoelectric points. We prepared the QAE2 (AFP11) and SP (AFP6) isoforms of the notched-fin eelpout AFP and their mutant constructs and determined their temperature gradients of amide proton chemical shifts (𝚫δ/𝚫T) using NMR. The nfeAFP11 (QAE2) has the distinct 𝚫δ/𝚫T pattern of the first 310 helix compared to the QAE1 isoforms. The nfeAFP6 (SP) has the deviated 𝚫δ/𝚫T values of many residues, indicating its backbone conformational distortion. The study suggests the distortion in the H-bonding interactions and backbone conformation that is important for TH activities.