úvod
ISO (Mezinárodní organizace pro normalizaci) je globální aliance národních normalizačních orgánů (členy ISO). Vývoj mezinárodních norem se obvykle provádí prostřednictvím technických komisí ISO. Každá členská instituce, která se zajímá o předmět, pro který byla ustavena technická komise, má právo být v této komisi zastoupena. Do této práce jsou zapojeny také mezinárodní vládní a nevládní organizace, které jsou ve spojení s ISO. ISO úzce spolupracuje s Mezinárodní elektrotechnickou komisí (IEC) ve všech záležitostech elektrické normalizace.

Mezinárodní normy jsou navrhovány v souladu s pravidly uvedenými v Části 3 směrnice ISO/IEC.

Návrh mezinárodní normy přijatý Technickou komisí bude rozeslán členským orgánům k hlasování. Publikace jako mezinárodní norma vyžaduje schválení min 75% členských institucí.

Please note that some elements of this part of ISO 6603 Může být předmětem patentového práva. ISO nenese odpovědnost za identifikaci některého nebo všech takových patentů.

Mezinárodní standard ISO 6603-1 was developed by the Technical Committee ISO/TC61, Plasty, Podvýbor SC 2, Mechanical Properties.

ISO 6603-1-2000 “Plasty – Determination of puncture impact behaviour of rigid plastics – Část 1: Non-instrumental impact testing”

The second edition cancels and replaces the technically revised first edition (ISO 6603-1:1985).

ISO 6603 se skládá z následujících částí, under the general heading Plastics – Determination of puncture impact behaviour of rigid plastics:

– Část 1: Non-instrumental impact testing

– Část 2: Instrumented impact testing

Dodatek A této části ISO 6603 is for information purposes only.

1 Rozsah
This standard specifies a method for determining, under specified conditions, the puncture impact properties of rigid plastics in the form of flat specimens, such as disks or squares. The sample can be molded directly, cut from the sheet or removed from the finished product. Different types of samples and test conditions are defined.

ISO 6603-1-2000 “Plasty – Determination of puncture impact behaviour of rigid plastics – Část 1: Non-instrumental impact testing”

These drop dart methods are used to study the behavior of plastic films or molds under the impact of a firing pin perpendicular to the specimen plane.

Tato část ISO 6603 can be used if it is sufficient to characterize the impact behavior of plastics by an impact failure energy threshold based on many samples. If a force-deflection or force-time plot recorded at a nominal constant firing pin speed is necessary to characterize impact behavior in detail, ISO 6603-2 is used.

These test methods are suitable for specimens with thicknesses between 1 mm and 4 mm.

Note For thicknesses less than 1 mm, ISO 7765 is recommended. If the equipment is suitable, it is possible to test thicknesses greater than 4 mm, but this test falls outside the scope of ISO 6603-1 a ISO 6603-2.

These methods are suitable for the following types of materials:

Rigid thermoplastic molding and extrusion materials, including filled, unfilled and reinforced compounds and sheets;

– Rigid thermosetting molding and extrusion materials, including filling and reinforcing compounds, sheets and laminates;

ISO 6603-1-2000 “Plasty – Determination of puncture impact behaviour of rigid plastics – Část 1: Non-instrumental impact testing”

Fiber-reinforced thermoset and thermoplastic composites, including unidirectional or non-unidirectional reinforcement materials, such as MATS, woven fabrics, woven roving, cut strands, combined and mixed reinforcement materials, roving, milled fibers and sheets made from pre-impregnated materials (prepregs).

These methods are also applicable to samples molded or machined from finished products, laminates and extruded or cast plates.

The test results are comparable only when the preparation conditions, size and surface of the sample and the test conditions are the same. Zejména, the results determined on specimens of different thicknesses cannot be compared with each other (see Appendix E: – na ISO 6603-2). A comprehensive assessment of the impact stress response requires measurement of the impact velocity and temperature of different material variables, such as crystallinity and moisture content.

The impact behavior of the finished product cannot be predicted directly from this test, but samples can be taken from the finished product (see above) for testing by these methods.

Test data developed through these methods should not be used in design calculations. nicméně, information on the typical behaviour of the material can be obtained by testing at different temperatures and impact velocities (see Annex D of ISO 6603-2: -), varying thickness (see Annex E of ISO 6603-2: -) and testing samples prepared under different conditions.

Tato část ISO 6603 describes two statistical test methods:

– Metoda A: Staircase Method (Individual) (preferred)

V této metodě, a uniform energy increment is used during the test. After testing each sample, the energy is reduced or increased by uniform increments, depending on the observations (pass or fail) of the previous test.

ISO 6603-1-2000 “Plasty – Determination of puncture impact behaviour of rigid plastics – Část 1: Non-instrumental impact testing”

– Metoda B: Group method (Volitelný)

V této metodě, a continuous group of at least ten samples is tested. The impact failure energy is calculated statistically.

2 Normativní odkazy
Následující normativní dokumenty obsahují ustanovení, která, odkazem zde, tvoří ustanovení této části ISO 6603. Pro datované odkazy, jakékoli následné revize nebo doplňky těchto publikací nebudou platit. nicméně, Parties to agreements based on this part of ISO 6603 vyzýváme k prozkoumání možnosti použití nových verzí následujících normativních dokumentů. Pro nedatované reference, platí nová verze uvedeného dokumentu o stanovování norem. Členové ISO a IEC vedou registr aktuálně platných mezinárodních norem.

ISO 291:1997, Plasty. Adjust and test the standard atmosphere.

ISO 293:1986, Plasty. Compression forming sample of thermoplastic material.

ISO 294-3:1996, Plasty. Injection molding of thermoplastic material samples. Část 3: Small board.

ISO 295:1991, Plasty. Compression molding of thermosetting material samples.

ISO 1268:19741), Plasty – Preparation of glass fiber reinforced, resin bonded, low pressure laminates or panels for test purposes.

ISO 2818:1994, Plasty. The sample was prepared by machining.

ISO 7765-1:1988, plastové fólie a fólie. The impact resistance was determined by the free falling dart method. Část 1: Staircase method.

ISO 7765-2:1994, plastové fólie a fólie. The impact resistance was determined by the free fall dart method. Část 2: Přístrojová punkční zkouška.

ISO 6603-1-2000 “Plasty – Determination of puncture impact behaviour of rigid plastics – Část 1: Non-instrumental impact testing”

3 termíny a definice
For the purposes of this part of ISO 6603, platí následující termíny a definice:

3.1 Přehled

3.1.1 Failure

Any visible breakage of the specimen surface

3.2 Failure standard terms

3.2.1 Crack

Any cracks that are visible to the naked eye and cannot penetrate the entire thickness of the material

See: Postava 1

3.2.2 Broken

Any cracks throughout the entire thickness of the material

See: Postava 2

3.2.3 Penetration

Failure of the firing pin to penetrate the entire thickness of the specimen

See: Postava 3 b)

3.2.4 Grinding

Break the sample into two or more pieces

See: Postava 3 A)

3.3 Impact failure items
3.3.150 % impact failure energy E50

The energy that causes 50% of the sample to fail, as defined in 3.1.1

3.3.250 % impact failure mass M50

The mass that causes 50% of the sample to fail at a given fall height, as defined in 3.1.1

3.3.350 % impact failure mass H50

50% impact failure height H50 uses the height at which a given falling mass causes 50% sample failure, as defined in 3.1.1

Postava 1 – Specimen sections damaged by “praskliny” [b) and c) after bending by hand

ISO 6603-1-2000 “Plasty – Determination of puncture impact behaviour of rigid plastics – Část 1: Non-instrumental impact testing”

Postava 2 – Slices passed through the specimen are damaged by “breakage” [b) and c) after bending by hand

Postava 3 – Examples of “broken” failures [A) a “penetrated” [b)

A)

b)

Veřejná je pouze standardní informační sekce. Chcete-li zobrazit celý obsah, musíte si standard zakoupit prostřednictvím oficiálních kanálů.