Hydraulische Kriechtestmaschine

Details

Veröffentlichungs-Nr.

EP4822331

Anmeldetag

8. April 2025

Veröffentlichung

14. Oktober 2026

Rechtsraum

EP

IPC

G01N3/10, G01N3/36

Abstract

A hydraulic creep testing machine comprising a pump system (2), an output force regulation system (3), and at least one output cylinder (4) configured to apply a force (F) on a creep test object (100). The output force regulation system (3) comprises an accumulator (6), the accumulator connected to a pump outlet (7) of the pump system via a pump to accumulator circuit portion (8) and connected to the at least one output cylinder (4) via an accumulator to cylinder circuit portion (14). The pump to accumulator circuit portion (8) comprises a pump outlet on-off valve (10) switchable between an on position allowing fluid to flow from the pump system to the accumulator and an off position closing fluid communication between the pump system (2) and the accumulator (6). The accumulator to cylinder circuit portion (14) comprises a cylinder inlet on-off valve (22) switchable between an on position allowing fluid communication between the accumulator and at least one output cylinder, and an off position closing fluid communication between the accumulator and at least one output cylinder. The system is configured such that when the pump outlet on-off valve (10) is open, the cylinder inlet on-off valve (22) is closed and when the cylinder inlet on-off valve (22) is open, the outlet on-off valve (10) is closed.

Anmelder

Firma

Ecole Polytechnique Fédérale de Lausanne (EPFL)

Land

🇨🇭 Schweiz

Fachgebiete