Standard Test Methods for 1H-NMR Determination of Ketone-Ethylene-Ester and Polyvinyl Chloride Contents in KEE-PVC Roofing Fabrics

2017 ◽  
Author(s):  
Keyword(s):  
Polyvinyl Chloride ◽  
1H Nmr ◽  
Test Methods ◽  
Standard Test

scholarly journals Analisis Pengaruh Temperatur Pemanasan Terhadap Sifat Fisis Sinter Silika dan Tipe Fluida (Air) pada Mata Air Panas Sapan Maluluang, Kecamatan Alam Pauh Duo, Kabupaten Solok Selatan

2017 ◽  
Vol 6 (1) ◽  
pp. 1-8
Author(s):  
Tania Dian Putri ◽  
Ardian Putra
Keyword(s):  
Test Methods ◽  
Standard Test ◽  
Laboratory Determination

Telah dilakukan analisis sifat fisis sinter silika dan tipe fluida pada mata air panas Sapan Maluluang Kecamatan Alam Pauh Duo, Solok Selatan. Sifat fisis yang diteliti dalam penelitian ini yaitu densitas dengan menggunakan hukum Archimedes, porositas dengan menggunakan standar ASTM D7263-09 (Standard Test Methods for Laboratory Determination of Density of Soil Specimens), dan resistivitas dengan metode Probe Dua Elektroda. Nilai densitas, porositas dan resistivitas sinter silika pada temperatur 31oC dalam pengukuran ini adalah 1,206 g/cm3, 15,8 %, dan 7,195 Ωm. Pengaruh temperatur terhadap sifat fisis sinter silika juga dianalisis dalam penelitian ini. Berdasarkan pengukuran, peningkatan temperatur dari 175 oC hingga 300 oC mengakibatkan nilai densitas turun dari 1,112 g/cm3 menjadi 0,983 g/cm3, sedangkan nilai porositas sinter silika naik dari 33,3 % menjadi 53,3 %. Nilai resistivitas sinter silika juga mengalami peningkatan dari 23,035 Ωm menjadi 57,201 Ωm. Terdapat hubungan nilai faktor resistivitas dengan porositas yaitu bertambahnya pori-pori sinter silika mengakibatkan nilai faktor resistivitas mengecil. Hubungan nilai faktor resistivitas dan porositas sinter silika menghasilkan nilai sementasi dan tortuositas sinter silika. Meningkatnya temperatur sinter silika dari 175 oC hingga 300 oC menyebabkan nilai tortuositas meningkat dari 6,92 menjadi 48,89 dan sementasi mengecil dari 1,67 menjadi 1,08. Penentuan tipe fluida mata air panas, menggunakan kandungan sulfat, klorida dan bikarbonat yang terdapat pada air panas. Metode yang digunakan dalam pengujian kandungan sulfat yaitu Spektrofotometri, sedangkan kandungan klorida dan bikarbonat diuji dengan metode Argentometri cara Mohr dan metode titrasi asam basa. Berdasarkan pengolahan data menggunakan diagram trilinier, mata air panas Sapan Maluluang termasuk kedalam tipe air panas klorida karena kandungan klorida merupakan kandungan yang paling dominan yaitu mencapai 97,560 mg/L, sedangkan kandungan sulfat dan bikarbonat mencapai 21,333 mg/L dan 23,730 mg/L. Kata kunci : densitas, porositas, resistivitas, sinter silika, tipe air panas

On the Determination of Crack Initiation Using Standard Test Methods

1986 ◽  
Vol 14 (6) ◽  
pp. 292 ◽  
Author(s):  
A Wolfenden ◽  
D Hellmann ◽  
K-H Schwalbe
Keyword(s):  
Crack Initiation ◽  
Test Methods ◽  
Standard Test

Report of the Committee on Establishment of Standard Test Methods for Determination of Insect Resistance

1963 ◽  
Vol 9 (1) ◽  
pp. 55-55
Author(s):  
H. Hurtig ◽  
A. W. Lindquist ◽  
G. F. Ludvik ◽  
K. D. Quarterman ◽  
H. T. Reynolds
Keyword(s):  
Insect Resistance ◽  
Test Methods ◽  
Standard Test

Determination of the Fracture Toughness Parameters for an MDF Cement Composite

1985 ◽  
Vol 64 ◽  
Author(s):  
M. Arzamendi ◽  
R. L. Sierakowski ◽  
W. E. Wolfe
Keyword(s):  
Fracture Toughness ◽  
Cement Composite ◽  
Compact Tension ◽  
Test Methods ◽  
Standard Test ◽  
Elastic Behavior ◽  
Hardened Cement ◽  
Linear Elastic ◽  
Toughness Testing

ABSTRACTThe experimental results of fracture toughness testing of a Macro Defect (MDF) Free cement are presented. The material, a hydraulic cement with hydrolyzed polyvinyl polymers, behaves much like a hardened ceramic with measured maximum compressive and tensile strengths of 380 MN/m2 and 69 MN/m2 respectively. Fracture toughness tests were performed on compact tension (CT) and single edge notched beam (SENB) specimens cut from test panels which were supplied in 3mm, 5mm and 10mm thicknesses. The results were evaluated with respect to the fracture toughness parameter Kic using a modification of standard test methods as determined by observed natural behavior. The MDF material exhibited an essentially linear elastic behavior with a fracture toughness slightly higher than typical values recorded for hardened cement paste.

scholarly journals ВЛАСТИВОСТІ ЕЛАСТИЧНИХ ОСНОВОВ'ЯЗАНИХ БИНТІВ

2020 ◽  
pp. 28-35
Author(s):  
О. П. Кизимчук ◽  
Л. М. Мельник ◽  
Р. Л. Сліпченко
Keyword(s):  
Test Methods ◽  
Standard Test ◽  
Raw Material ◽  
Polyester Yarn ◽  
Deformation Properties ◽  
Study Methodology ◽  
Knitted Structure ◽  
Relaxation Characteristics ◽  
Elastic Bandage

The market analysis of knitted elastic bandages in Ukraine, the investigation of the parameters and properties  of  the  most  common  products  and  their  comparison  as  well  as determination  of compliance to requirements are the main purposes of this study. Methodology. Standard test methods were used to experimental study the raw material composition, type of interlooping, structure parameters and relaxation characteristics of elastic bandages. Results. As a result of the study of the elastic bandage structure, it is found that all tested bandages are produced on Crochet knitting machine using four yarn systems. chain stitch with closed loop from is a ground interlooping. The ground guide bar is partially threaded with polyester yarn depending on the manufacturer. The requested level of elasticity is provided by elastomeric threads, which are used as longitudinal in-lay yarn with incomplete threaded of the guide bar and a diff erent repeat of its shifting behind the needles. The other two yarns systems are cotton yarn in several ends, which is laid across the bandage's entire width at both sides of the elastomeric yarn, ensuring its overlap and the combination of individual chain wales into the fabric. Obtained  experimental  data  of  the  parameters  and  elongation  of  elastic  bandages  of  diff erent manufactures allowed to establish their compliance with standardized values. It ensures the products functionality during usage. It is indicated that the yarn composition specifi ed by the manufacturers correlated  with  experimental  results.  The  percentage  of  the  elastomeric  thread  content  is  not  a determining characteristic of the bandage's stretchability since the elastic component of full deformation for all tested bandages exceeds 0.95. The residual component is less than 0.02. It is indicating high elastic properties and functionality. The practical signifi cance  of the work is confi rmed by the possibility of evaluating a bandage of a particular manufacturer based on the resulting array of their properties data. The results of the work expand the knowledge about the infl uence of the knitted structure on the parameters and deformation properties of elastic bandage.

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