{"id":1335,"date":"2025-08-04T05:29:43","date_gmt":"2025-08-04T05:29:43","guid":{"rendered":"https:\/\/www.filmpendulumimpact.com\/?page_id=1335"},"modified":"2025-08-04T05:31:53","modified_gmt":"2025-08-04T05:31:53","slug":"nf-t54-116","status":"publish","type":"page","link":"https:\/\/www.filmpendulumimpact.com\/uk\/nf-t54-116\/","title":{"rendered":"NF T54-116"},"content":{"rendered":"
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NF T54-116<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Film Pendulum Impact Testing<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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NF T54-116<\/strong>, a French national standard, outlines a reliable test method to evaluate the impact resistance of plastic film<\/strong> through film pendulum impact testing<\/strong>. The procedure measures the energy absorbed during the perforation of a film sample by a hemispherical impactor mounted on a pendulum\u2014also referred to as the pendulum shock test<\/strong> or perforameter method<\/strong>.<\/p>\n

In this guide, we\u2019ll break down the key procedures of NF T54-116, its relevance to pendulum impact resistance of plastic film<\/strong>, and how modern equipment such as the PIT-01 Film Pendulum Impact Tester<\/strong> from Cell Instruments ensures precise and reproducible results in compliance with the standard.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Film Pendulum Impact Tester and Spencer Impact Test Explained<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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The \u043f\u043b\u0456\u0432\u043a\u043e\u0432\u0438\u0439 \u043c\u0430\u044f\u0442\u043d\u0438\u043a\u043e\u0432\u0438\u0439 \u0443\u0434\u0430\u0440\u043d\u0438\u0439 \u0442\u0435\u0441\u0442\u0435\u0440<\/strong> specified in NF T54-116 features a pendulum with a 38.1 mm hemispherical head<\/strong>, capable of being loaded with various counterweights to deliver maximum energies ranging from 5 J to 60 J<\/strong>. The test measures the residual energy<\/strong> after the pendulum strikes and perforates the specimen. By calculating the energy loss, the absorbed energy\u2014representing the film’s resistance to puncture\u2014is determined.<\/p>\n

This method differs from the Spencer impact test<\/strong> (ASTM D3420 Procedure B), but both share the objective of evaluating film impact resistance<\/strong> at high strain rates. These standards are crucial for ensuring that plastic films used in medical, food, construction<\/strong>, or automotive<\/strong> applications can resist rupture during real-world use.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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How NF T54-116 Pendulum Impact Testing Works<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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The pendulum impact resistance test<\/strong> under NF T54-116 involves the following steps:<\/p>\n

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    Specimen Preparation<\/strong>:
    Ten specimens measuring 20 cm \u00d7 20 cm<\/strong> are cut from various areas of the plastic film roll. Thickness is measured using a micrometer with a resolution appropriate to the film\u2019s gauge.<\/p>\n<\/li>\n

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    Conditioning<\/strong>:
    Test samples are conditioned at 23\u202f\u00b1\u202f2\u202f\u00b0C<\/strong> for at least two hours to stabilize moisture and mechanical behavior.<\/p>\n<\/li>\n

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    Apparatus Setup<\/strong>:<\/p>\n