scholarly journals Investigation and evaluation of the quality features related to comfort of casual shoes in Bangladeshi leading retail brands using physical and chemical standard test methods

2019 ◽  
Vol 19 (1) ◽  
pp. 11-20
Author(s):  
Md. Rayhan Sarker ◽  
Amal Kanti Deb ◽  
Manjushree Chowdhury ◽  
Md. Israil Hossain
Keyword(s):  
Test Methods ◽  
Standard Test ◽  
Physical And Chemical ◽  
Quality Features

Priorities for development of standard test methods to support the commercialization of cellulose nanomaterials

TAPPI Journal ◽  
2019 ◽  
Vol 18 (4) ◽  
pp. 245-260 ◽  
Author(s):  
STEPHANIE BECK ◽  
COLLEEN WALKER ◽  
WARREN BATCHELOR
Keyword(s):  
Test Methods ◽  
Standard Test ◽  
Technical Committee ◽  
Task Group ◽  
Standard Procedures ◽  
Control Production ◽  
Cellulose Nanomaterials ◽  
Survey Responses ◽  
Physical And Chemical

With the growing number of producers and users of cellulose nanomaterials (CNMs), there is an increasing need to develop standard test methods to control production and quality of CNMs. In 2014, a Task Group was formed within the ISO Technical Committee 6 Paper, board and pulps to begin addressing the need for standards. This Task Group, TG 1, was tasked with reviewing existing standards and identifying the need for additional standards to characterize CNMs. In March 2018, TG 1 launched a survey to ask CNM producers around the world about the importance of having standard procedures to measure and quantify a variety of CNM properties, both physical and chemical. Producers were asked to identify the type(s) of CNM they produced and their scale of production, and to rank the properties for which they felt standard test methods were most important. In this paper, we summarize the survey responses and identify those properties of highest interest for producers of both cellulose nanocrystals (CNCs) and cellulose nano- and microfibril-based materials (CNFs/CMFs). Properties of importance can be divided into three broad groups: i) a standard has either been developed or is under development, ii) a currently used standard could be adapted for use with CNMs, or iii) no standard is currently available and further R&D and consultation with industry is needed before a suitable and well-validated standard can be developed. The paper also examines the challenges of developing new standard methods for some of the key properties—as well as the feasibility and limitations of adapting exiting standards—to CNMs.

scholarly journals Comparison of Two Intergranular Corrosion Tests on EN AW-6016 Sheet Material

2021 ◽  
Vol 11 (11) ◽  
pp. 5294
Author(s):  
Peer Decker ◽  
Ines Zerbin ◽  
Luisa Marzoli ◽  
Marcel Rosefort
Keyword(s):  
Optical Microscopy ◽  
Intergranular Corrosion ◽  
Sheet Material ◽  
Test Methods ◽  
Standard Test ◽  
Corrosion Depth ◽  
Corrosion Tests ◽  
Automotive Company ◽  
Test Parameters

Two different intergranular corrosion tests were performed on EN AW-6016 sheet material, an ISO 11846:1995-based test with varying solution amounts and acid concentrations, and a standard test of an automotive company (PV1113, VW-Audi). The average intergranular corrosion depth was determined via optical microscopy. The differences in the intergranular corrosion depths were then discussed with regard to the applicability and quality of the two different test methods. The influence of varying test parameters for ISO 11846:1995 was discussed as well. The determined IGC depths were found to be strongly dependent on the testing parameters, which will therefore have a pronounced influence on the determined IGC susceptibility of a material. In general, ISO 11846:1995 tests resulted in a significantly lower corrosion speed, and the corrosive attack was found to be primarily along grain boundaries.

Serviceability Assessment of a Printed Finish on T-Shirts

2021 ◽  
Vol 8 (2) ◽  
pp. 48-53
Author(s):  
Reannan Riedy ◽  
Meredith McQuerry
Keyword(s):  
Abrasion Resistance ◽  
Dimensional Change ◽  
Test Methods ◽  
Standard Test ◽  
Performance Expectations ◽  
Agricultural Worker ◽  
Soil Release ◽  
And Performance ◽  
Typical Consumer ◽  
Change Material

To improve the comfort of agricultural workers, a T-shirt with a printed active cooling finish was evaluated to determine if it would meet the wash life durability and performance expectations of such an arduous application. Six shirts with a printed phase change material (PCM) finish and six shirts without (control) were washed 50 times to replicate a typical consumer wash life. Shirts were evaluated for absorbency, dimensional change, colorfastness, crocking, abrasion resistance, soil release, and smoothness retention according to AATCC and ASTM standard test methods. Testing was conducted before laundering and after 1, 5, 10, 20, 30, 35, 40, 45, and 50 consumer laundry (CL) cycles. Absorbency and dimensional change were significantly influenced by the PCM finish. Results demonstrate the appropriateness of adopting such a finish technology for agricultural worker clothing applications.

Development of standard test methods for unmanned and manned industrial vehicles used near humans

2013 ◽  
Author(s):  
Roger Bostelman ◽  
Richard Norcross ◽  
Joe Falco ◽  
Jeremy Marvel
Keyword(s):  
Test Methods ◽  
Standard Test

scholarly journals Nanostructured Bitumen with Nanocarbon

2019 ◽  
Vol 21 (4) ◽  
pp. 317 ◽  
Author(s):  
B.B. Teltayev ◽  
A.A. Kalybai ◽  
G.G. Izmailova ◽  
S.R. Rossi ◽  
E.D. Amirbayev ◽  
...  
Keyword(s):  
Low Temperature ◽  
Test Methods ◽  
Structure Variation ◽  
Temperature Resistance ◽  
Chemical Indicators ◽  
Excess Surface ◽  
The Cost ◽  
Physical And Chemical ◽  
Low Temperature Resistance

Physical and chemical indicators of bitumen quality of grade BND 70/100 with the added carbon nanopowder 2% by weight have been studied by laboratory test methods and analysis. High reaction ability of nanopowder particles and concentration of excess surface and internal energy in them have been determined, which provide the increase of low-temperature resistance, aggregate strength, and improvement of rheological properties of nanostructured bitumen. Essential structure variation has been proved: the increase of asphaltenes and oils content for 9% and 7.2% respectively due to the decrease of resins for 16.2% by weight. Methods have been discussed for preparing a liquid nanocarbon mix, adding of the mix into bitumen and homogenization of the bitumen. Some economic indicators have been represented which influence essentially the reduction for the cost value of the nanostructure bitumen.

scholarly journals Derived Interaction Parameters for the TSAI-WU Tensor Polynomial Theory of Strength for Composite Materials

2001 ◽  
Author(s):  
Steven J. DeTeresa ◽  
Gregory J. Larsen
Keyword(s):  
Hydrostatic Pressure ◽  
Fiber Composite ◽  
Strength Criterion ◽  
Test Methods ◽  
Standard Test ◽  
Transverse Compression ◽  
Strength Parameters ◽  
Carbon Fiber Composite ◽  
The Stability ◽  
Stability Limits

Abstract It is shown that the two interactive strength parameters in the Tsai-Wu tensor polynomial strength criterion for fiber composites can be derived in terms of the uniaxial or non-interacting strength parameters if the composite does not fail under practical levels of hydrostatic pressure or equal transverse compression. Thus the required number of parameters is reduced from seven to five and all five of the remaining strength terms are easily determined using standard test methods. The derived interactive parameters fall within the stability limits of the theory, yet they lead to open failure surfaces in the compressive stress quadrant. The assumptions used to derive the interactive parameters were supported by measurements for the effect of hydrostatic pressure and unequal transverse compression on the behavior of a typical carbon fiber composite.

scholarly journals The synergistic effect of borax and chlorinated paraffin as flame – retardants for epoxy and unsaturated polyester resins

2008 ◽  
Vol 5 (1) ◽  
pp. 131-136
Author(s):  
Baghdad Science Journal
Keyword(s):  
Synergistic Effect ◽  
Flame Retardants ◽  
Unsaturated Polyester ◽  
Test Methods ◽  
Standard Test ◽  
Good Effect ◽  
Polyester Resins ◽  
Unsaturated Polyester Resins ◽  
Flame Retardation ◽  
Chlorinated Paraffin

In this investigation , borax (B) (additive I) and chlorinated paraffin (CP.) (additive II) ,were used as flame retardants for each of epoxy and unsaturated polyester resins in the weight ratios of 2,4,6, & 8% by preparing films of (130×130×3) mm dimensions. Also films of these resins with a mixture of [50%(B.)+50%(CP.)] (additive III) in the same weight ratios were prepared in order to study the synergistic effect of these additives on the flammability of the two resins . Three standard test methods were used to measure the flame retardation which are : 1-ASTM : D-2863 2-ASTM : D-635 3-ASTM : D-3014 The results obtained from these tests indicated that the additives (B),(CP.) and their mixture , gave a good effect as flame retardants for each epoxy and unsaturated polyester resins , but their synergistic effect was more effective than each of them alone. Finally , the compatibility between the additives and resins (which showed a clear effect on retardation) was also studied .

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

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