GB/T 15048-1994 PDF English
US$139.00 · In stock · Download in 9 secondsGB/T 15048-1994: Cellular plastics, rigid - Determination of compressive creep Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 15048-1994 | English | 55 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Cellular plastics, rigid - Determination of compressive creep
| |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 15048-1994
GB/T 15048-1994: Cellular plastics, rigid - Determination of compressive creep---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT15048-1994
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC 678.742.678.746.620.172.21
G 32
Cellular plastics, rigid - Determination of compressive creep
Issued on: APRIL 12, 1994
Implemented on: DECEMBER 01, 1994
Issued by. State Bureau of Quality and Technical Supervision
Table of Contents
1 Subject content and scope of application... 3
2 Normative references... 3
3 Principle... 3
4 Apparatus... 3
5 Specimen... 4
6 Procedure... 4
7 Test conditions... 5
8 Expression of results... 5
9 Test report... 6
Additional information... 7
Cellular plastics, rigid - Determination of compressive creep
This Standard is identical to the international standard ISO 7850-1986, Cellular plastics,
rigid - Determination of compressive creep.
1 Subject content and scope of application
This Standard specifies the method for determining the compressive creep of rigid
cellular plastic specimens under specified stress, temperature and relative humidity
conditions.
This Standard applies to various rigid cellular plastics.
2 Normative references
GB 2918, Standard atmospheres for conditioning and testing of plastic specimens
GB 6342, Cellular plastics and rubbers - Determination of linear dimensions
3 Principle
Under specified temperature and relative humidity conditions, the specimen produces
compressive deformation under constant pressure. Measure the change of compressive
strain over time.
Calculate the initial deformation percentage and compressive creep percentage of the
specimen.
4 Apparatus
4.1 Test chamber
A constant temperature and humidity test chamber that can meet the requirements of
7.1 and 7.2.
4.2 Thickness measuring instrument
Shall comply with the requirements of GB 6342.
4.3 Loading device
The loading device consists of two parallel plates and weights. The two parallel plates
shall be able to compress the specimen vertically. One of the two plates is a movable
plate with a guide device, and its lateral displacement shall be less than 1mm. The two
parallel plates shall not deform during the test. During the test, it shall be available to
measure the thickness of the sample to an accuracy of 0.1 mm.
The loading device shall be kept level and free from vibration during the test.
5 Specimen
5.1 Shape and size
The specimen shall be a rectangular parallelepiped or cylindrical object with a load-
bearing cross-sectional area of at least 25 cm2 and a standard specimen thickness of 50
± 1 mm. The minimum thickness of the specimen is 20 mm. When the thickness exceeds
50 mm, the cross-sectional area under load shall not be less than the square of the
thickness. The thickness deviation between the two surfaces of the specimen being
tested shall not exceed 1% of the thickness. For products with skin during use, the
specimen shall retain the product skin.
Test results on materials with or without skin or of different thicknesses are not
comparable.
5.2 Preparation
Cut the specimen from the sample, and the thickness direction of the specimen shall be
consistent with the pressure direction of the product when it is finally used.
The specimen can be cut with a saw, knife or other cutting tools, ensuring that the
specimen is not damaged.
5.3 Number of specimens
Under the same test conditions, each group shall have no less than three specimens.
6 Procedure
6.1 Test conditions
The test shall be carried out in accordance with the standard environment and normal
deviation range specified in GB 2918, and the time shall not be less than 24 hours.
6.2 Creep test method carried out by applying pressure under standard ambient
conditions (Method A)
6.2.1 After state adjustment, measure the thickness of the specimen to an accuracy of
0.1 mm. Measure at least four points of each specimen and calculate the average
thickness H1.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of GB/T 15048-1994 be delivered?Answer: The full copy PDF of English version of GB/T 15048-1994 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice. Question 2: Can I share the purchased PDF of GB/T 15048-1994_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 15048-1994_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 15048-1994 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds. How to buy and download a true PDF of English version of GB/T 15048-1994?A step-by-step guide to download PDF of GB/T 15048-1994_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "GB/T 15048-1994".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9
|