{"id":11459,"date":"2025-12-24T08:15:29","date_gmt":"2025-12-24T08:15:29","guid":{"rendered":"https:\/\/ykmtest.com\/?post_type=product&#038;p=11459"},"modified":"2025-12-24T08:15:30","modified_gmt":"2025-12-24T08:15:30","slug":"compressometer-extensometer","status":"publish","type":"product","link":"https:\/\/ykmtest.com\/french\/produit\/compressometer-extensometer\/","title":{"rendered":"Compressom\u00e8tre-extensom\u00e8tre"},"content":{"rendered":"<p data-start=\"561\" data-end=\"962\">Le Compressom\u00e8tre-Extensom\u00e8tre est un ensemble de mesure de haute pr\u00e9cision con\u00e7u pour contr\u00f4ler les d\u00e9formations longitudinales et lat\u00e9rales des \u00e9prouvettes cylindriques en b\u00e9ton afin de d\u00e9terminer le module d'\u00e9lasticit\u00e9 et le coefficient de Poisson. D\u00e9velopp\u00e9 pour les laboratoires professionnels d'essais de mat\u00e9riaux, le syst\u00e8me garantit des mesures r\u00e9p\u00e9tables et exactes de la d\u00e9formation axiale lorsqu'il est utilis\u00e9 avec des cadres d'essais de compression automatiques.<\/p>\n<p data-start=\"964\" data-end=\"1329\">Les cadres d'\u00e9trier rigides mais l\u00e9gers s'assoient concentriquement autour de l'\u00e9chantillon gr\u00e2ce \u00e0 des points de contact de pr\u00e9cision. Cette conception maintient la fid\u00e9lit\u00e9 axiale, emp\u00eache le glissement pendant le chargement et assure un positionnement stable tout au long de l'essai. L'architecture met l'accent sur la rapidit\u00e9 d'installation et la s\u00e9curit\u00e9 d'utilisation, ce qui permet une int\u00e9gration efficace dans les flux de travail des essais de compression de routine.<\/p>\n<p data-start=\"1331\" data-end=\"1888\">Le cadre du compressom\u00e8tre standard comprend un double capteur de d\u00e9placement positionn\u00e9 sym\u00e9triquement sur les c\u00f4t\u00e9s oppos\u00e9s de l'\u00e9chantillon. Un pont de moyennage compense les excentricit\u00e9s mineures ou les effets de flambage, ce qui permet une mesure pr\u00e9cise de la d\u00e9formation axiale r\u00e9elle. Pour la mesure des d\u00e9formations lat\u00e9rales, l'extensom\u00e8tre circonf\u00e9rentiel applique une pression constante et uniforme autour de l'\u00e9chantillon \u00e0 l'aide d'un m\u00e9canisme de pr\u00e9charge \u00e0 ressort. Cette configuration garantit une mesure fiable de la d\u00e9formation transversale et permet de calculer directement le coefficient de Poisson.<\/p>\n<p data-start=\"1890\" data-end=\"2282\">Le syst\u00e8me est enti\u00e8rement compatible avec les dimensions courantes des cylindres de b\u00e9ton, y compris les sp\u00e9cimens de 100\u00d7200 mm et 150\u00d7300 mm. Les mesures peuvent \u00eatre effectu\u00e9es \u00e0 l'aide de transducteurs lin\u00e9aires \u00e0 haute r\u00e9solution ou de comparateurs de pr\u00e9cision, selon les pr\u00e9f\u00e9rences du laboratoire. L'appareil s'interface directement avec les syst\u00e8mes d'acquisition de donn\u00e9es, les enregistreurs de paillasse et les logiciels d'essai par le biais de sorties de signaux analogiques ou num\u00e9riques.<\/p>\n<p data-start=\"2284\" data-end=\"2658\">Le compressom\u00e8tre-extensiom\u00e8tre fonctionne conform\u00e9ment aux exigences de l'ASTM C469 en mati\u00e8re de taux de charge et de g\u00e9om\u00e9trie, ce qui garantit que les valeurs du module d'\u00e9lasticit\u00e9 et du coefficient de Poisson sont calcul\u00e9es avec pr\u00e9cision dans la zone stable, avant la rupture, de la courbe contrainte-d\u00e9formation. Un coffret de transport et de stockage en bois est disponible en option pour un transport s\u00fbr et une protection lorsqu'il n'est pas utilis\u00e9.<\/p>","protected":false},"excerpt":{"rendered":"<p>Le compressom\u00e8tre-extensiom\u00e8tre est un syst\u00e8me de mesure de d\u00e9formation de pr\u00e9cision permettant de d\u00e9terminer le module d'\u00e9lasticit\u00e9 et le coefficient de Poisson d'\u00e9prouvettes cylindriques en b\u00e9ton, conform\u00e9ment aux normes ASTM.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[142,143],"product_tag":[],"class_list":{"0":"post-11459","1":"product","2":"type-product","3":"status-publish","5":"product_cat-concrete","6":"product_cat-concrete-compression-machines","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.5 (Yoast SEO v26.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Compressometer-Extensometer - 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