Experimental Analysis of the Effect of ISOFIX Child Restraint System’s Harness Tension on Child Occupant’s Chest Acceleration in Frontal Collisions

Authors

Zhe Wei, National Quality Inspection and Testing Center for Engineering Machinery, China Academy of Machinery Science and Technology, Beijing, 102609, ChinaFollow

Abstract

The research seeks to ascertain the relation between ISOFIX child restraint system’s harness tension and child occupant’s chest acceleration in frontal collisions, and analyze the potential risks posed by different harness tensile forces. It is important to verify and validate the effects of harness tensions on child occupants’ potential injuries, since child restraint system’s user manual does not indicate the extent to which the adjusting belt should be pulled generally, thus making it possible to cause the harness tensile force to be applied arbitrarily. Hence, public awareness of the issue should be improved. A test scheme was devised and conducted to collect necessary information about P1.5 dummy in frontal collisions. The pulling forces applied to the adjusting belts were set at 3 different levels. Chest accelerations were acquired and compared to analyze the effects. Based on test results, the relation was ascertained and validated. Additionally, suggestions were made about adjusting the harness tension and appropriate use of ISOFIX child restraint system.

Bahasa Abstract

Penelitian ini berusaha untuk memastikan hubungan antara ketegangan harness sistem perlindungan anak ISOFIX dan akselerasi dada penumpang anak-anak pada tabrakan depan, dan menganalisis potensi risiko yang ditimbulkan oleh gaya tarik harness. Sangat penting untuk memverifikasi dan memvalidasi efek ketegangan harness pada potensi cedera penumpang anak-anak karena secara umum manual pengguna dan instruksi sistem perlindungan anak tidak menunjukkan sejauh mana sabuk penyetel harus ditarik, sehingga memungkinkan untuk menyebabkan kekuatan tarik harness untuk diterapkan semaunya. Oleh karena itu, diharapkan kesadaran masyarakat akan isu tersebut dapat ditingkatkan. Skema pengujian dirancang dan dilakukan untuk mengumpulkan informasi yang diperlukan tentang dummy P1.5 dalam tabrakan depan. Gaya tarik yang diterapkan pada sabuk penyetel ditetapkan pada 3 tingkat berbeda. Akselerasi dada diperoleh dan dibandingkan untuk menganalisis efek ketegangan harness. Berdasarkan hasil pengujian, hubungan antara keduanya dipastikan dan divalidasi. Selain itu, penelitian ini memberikan beberapa usulan tentang penyesuaian tegangan harness, dan penggunaan yang tepat dari sistem perlindungan anak ISOFIX.

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Recommended Citation

Wei, Zhe (2022) "Experimental Analysis of the Effect of ISOFIX Child Restraint System’s Harness Tension on Child Occupant’s Chest Acceleration in Frontal Collisions," Makara Journal of Technology: Vol. 26: Iss. 2, Article 6.
DOI: 10.7454/mst.v26i2.1561
Available at: https://scholarhub.ui.ac.id/mjt/vol26/iss2/6