Method for inspecting a weld

Patent metadata

Field	Value
Publication number	US-11624729-B2
Application number	US-202017074066-A
Country	US
Kind code	B2
Filing date	Oct 19, 2020
Priority date	Oct 30, 2019
Publication date	Apr 11, 2023
Grant date	Apr 11, 2023

Abstract

A method for inspecting a weld of plastic pipes by means of a data processing device, comprising:capturing and storing documents;monitoring and recording the installation and the implementation of the weld of the joint;producing a welding report, or adopting a welding report from the welding machine;testing the weld ultrasonically, wherein the test detects and stores the defects that are in the weld;wherein software is used to capture and store the documents, the welding report and the defects, more specifically the data on said defects, wherein an algorithm of the software is used to evaluate the stored documents, reports, defects and data on said defects, and to classify the welded joint as compliant or non-compliant with the requirements.

First claim

What is claimed is:

1. A method for inspecting a weld of plastic pipes by means of a data processing device, comprising:
capturing and storing data in documents;
welding the joint;
monitoring and recording information about the installation and the implementation of the weld of the joint;
producing a welding report, or adopting a welding report from a welding machine;
thereafter, testing the weld ultrasonically, wherein the test detects and stores defects that are in the weld;
capturing and storing, in a non-volatile memory, the welding report and information about the defects in the weld;
evaluating, in a processor, the stored documents, welding report and information about the defects in the weld; and
classifying the weld as compliant or non-compliant based on the evaluation.

2. A method according to claim 1 , wherein the method is applied to butt-fusion welds or electrofusion-coupler welds.

3. A method according to claim 1 , wherein the installation is specified step by step, and is monitored and recorded step by step.

4. A method according to claim 1 , wherein the algorithm includes the following steps:
adopting an initial value based on the components to be welded;
calculating a value based on the detected and stored defects;
subtracting the calculated value for the defects from the initial value;
checking whether the difference value obtained lies above or below a defined threshold value, on the basis of which the weld is deemed to be admissible or inadmissible.

5. A method according to claim 1 , wherein the defects are calculated on the basis of their dimension.

6. A method according to claim 1 , wherein the width, length and/or depth of the defects is detected and evaluated for the purpose of calculating the defects.

7. A method according to claim 1 , wherein the software is formed by an app.

Assignees

• Fischer G Rohrleitungssysteme Ag

Inventors

• Wermelinger Joerg
• Barbone Riccardo

Classifications

• G01N29/043

  in the interior, e.g. by shear waves · CPC title

• B29C66/1142

  Single butt to butt joints · CPC title

• B29C65/02 Primary

  by heating, with or without pressure · CPC title

• B29D23/001

  Pipes; Pipe joints (pleated hoses B29D23/18) · CPC title

• G01N29/4445

  Classification of defects · CPC title