Shock and Vibration Testing

Shock and Vibration Testing Services - Ensure Product Durability & Reliability

A product may seem to have been perfectly made before it has even been manufactured. However, what really happens to it when it is dropped, transported over bumpy roads, put through continuous vibration, or subjected to sudden shock? That is why Shock and Vibration Testing Services are important.

Electronic equipment and automotive components as well as industrial machinery, defence equipment and aerospace assemblies are subject to considerable mechanical stress over their entire lifecycle; a weak joint, a loose connection, a structural defect or an inadequate mounting arrangement may go unnoticed during normal operation but can turn into a serious point of failure when vibration or shock occurs.

Shock and vibration testing carried out in India allows manufacturers to simulate these real-world conditions within a controlled laboratory setting and to find out if their products are able to keep their structural integrity, functionality and performance.

Government testing facilities in India, such as the STQC, carry out environmental and durability tests for vibration, shock, bump, drop and other similar conditions in accordance with the relevant Indian and international standards.

What Do Shock and Vibration Testing Services Consist of?

The shock and vibration testing services assess the ability of a product to endure the mechanical stresses it may experience during transportation, handling, installation, and under both normal and extreme operating conditions.

Generally, vibration testing subjects a product to controlled oscillations, whereas shock testing involves subjecting it to sudden mechanical impacts or high acceleration pulses.

The specific test method will vary according to the product, its intended use, and the applicable standard; for electrical and electronic products,s the India STQC facilities determine which IS 9000 and relevant IEC 60068 methods are to be used for environmental testing, this covering vibration, shock, bump and drop testing.

Common Testing Areas Include:

Sinusoidal vibration testing
Random vibration testing
Mechanical shock testing
Bump testing
Drop and free-fall testing
Mechanical impact testing
Resonance testing
Vibration endurance testing
Vibration fatigue assessment
Combined environmental and vibration testing
Performance evaluation before and after mechanical stress

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What Is it That Makes Products Require Shock and Vibration Testing?

Mechanical stress can take place at nearly every stage of a product's lifecycle; for instance, a component might be exposed to vibration when a machine is in operation, during road transport, while in aircraft operation, or as a result of industrial processes. In a similar way, equipment can suffer sudden shocks when it is dropped, handled, installed, or hit accidentally.

Testing products for shock and vibration helps manufacturers to discover any possible weaknesses before the products get to the customers.

Key Benefits

What's the Difference Between Vibration Testing and Shock Testing?

Even though both tests look at mechanical robustness, they simulate different conditions.

Testing Type
What It Simulates
Main Purpose
Vibration Testing
Repeated mechanical oscillations
Evaluate durability and fatigue
Random Vibration
Variable vibration frequencies
Simulate complex real-world environments
Sinusoidal Vibration
Controlled periodic vibration
Identify resonance and structural response
Shock Testing
Sudden mechanical acceleration/deceleration
Evaluate impact resistance
Bump Testing
Assess resistance to repeated handling shocks
Drop Testing
Free-fall impact
Evaluate packaging/product robustness

The sine and random vibration, shock, bump, drop, and topple tests are included by the Government of India's STQC environmental testing facilities among their durability services.

What Products Need to Undergo Shock and Vibration Testing?

Shock and vibration testing of electronics is generally carried out in order to evaluate the robustness of equipment that is subject to mechanical movement or transportation.

Typical products include:

The government’s testing facilities include among the types of products that can be subject to environmental testing electronic items, telecom products, power products, IT products, defence products, prototypes, chemical products, and mechanical products.

What Parameters Are Evaluated?

The test parameters are set in accordance with the relevant test standard and product specification.

Depending on the test, laboratories may evaluate:

Frequency range
Acceleration
Displacement
Vibration amplitude
Power spectral density for random vibration
Shock pulse shape
Shock duration
Number of shocks
Number of vibration cycles
Test direction
Product mounting arrangement
Functional performance during testing
Physical condition after testing

For instance, STQC publishes information on vibration capabilities which cover sine and random vibration and lists parameters such as force, frequency, displacement, acceleration, and PSD; with regard to shock, it gives details of acceleration, pulse duration, and pulse shape.

Basic Requirements for Shock and Vibration Testing

Prior to carrying out the shock and vibration testing in India, manufacturers must determine the exact testing requirements.Basic requirements generally include:

Identification of the product, including its name, model, and configuration.
The applicable standard is the relevant one from the IS, IEC, MIL, JSS, or the product-specific specification.
The specifications for the test should include the frequency, acceleration, duration, pulse, and all other required parameters.
Availability of samples: typical samples in a suitable operating condition.
Growing amounts of information, including the manner in which the product is installed or secured.
The operating condition refers to whether the product is tested with power applied, with no power, or under a specific functional condition.
The criteria for acceptance, the physical and functional requirements following testing.
The technical documentation includes product specifications, drawings, and all other pertinent supporting documents.

Step-by-Step Shock and Vibration Testing Procedure

A systematic method ensures that the test correctly reflects the intended application.

Step 1: Product Setup

The product or component is mounted securely on the testing platform, which is suitable for the required test conditions.

Step 2: Vibration Testing

The product is subjected to sinusoidal, random, or mechanical vibration tests in order to assess its durability and performance.

Step 3: Shock Testing

The product's resistance to sudden forces is tested by subjecting it to controlled drops, bumps, impacts, or mechanical shocks.

Step 4: Compliance Evaluation

The test results are compared with the relevant NABL, ISO/IEC 17025, and industry-specific requirements, where appropriate.

Step 5: Test Reporting

A detailed test report lists the test conditions, what was observed, the results, and any compliance details that apply. This report helps show the product is ready for qualification and the market.

Documents Required for Shock and Vibration Testing

A laboratory or consultant may request some or all of the following:

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How Long Does Shock and Vibration Testing Take?

There cannot be a general testing timeline since the time taken will vary depending on the product and the test programme.

Factors affecting the timeline include:

Number of samples
Number of test axes
Test duration
Number of vibration cycles
Shock repetitions
Product size and weight
Mounting requirements
Applicable standard
Laboratory availability
Whether additional environmental tests are required
Whether the product passes the initial test

A simple test can be finished rather quickly, while a multi-stage qualification programme can take a great deal of time.

UMSPCS is able to evaluate the product requirements and arrange the testing process so as to give a more realistic timeline before testing starts.

Is There any Merit in a Shock and Vibration Test Report?

A general shock or vibration test report consists of evidence that testing has been carried out on a specific sample under defined conditions, not a general certificate with a fixed validity period.

Whether an existing report can be reused depends on:

Applicable regulatory scheme
Product model and design
Manufacturing changes
Applicable standard
Test conditions
Customer requirements
Age of the report
Requirements of the certification authority

With regard to conformity assessment involving BIS, various schemes might set out their own requirements as to the acceptability and the age of test reports. Manufacturers should therefore not suppose that all test reports stay acceptable forever. For instance, the BIS guidance includes specific requirements about the age of reports in certain licensing situations.

Legal Framework and Government Guidelines in India

There is no single general law that applies to all products when it comes to shock and vibration testing. The requirements are derived from the relevant Indian Standards, the BIS conformity assessment requirements, the sector-specific regulations, the technical specifications, and the customer's requirements.

Under the BIS Act of 2016, the BIS has the authority to recognise laboratories when testing samples as part of conformity assessment. The BIS Laboratory Recognition Scheme functions within this legal framework.

The BIS also keeps up its list of recognised and empanelled laboratories and supplies information about the laboratories according to Indian Standards via its LIMS system.

That is why manufacturers ought to pick a laboratory which has the relevant scope rather than choosing one simply because it provides general vibration testing. Need to know more information about NABL Testing & NABL Accreditation in India.

What Difficulties Can Manufacturers Encounter?

A product may seem mechanically strong, but testing can still show unexpected weaknesses.

Common challenges include:

Selecting the wrong test standard
Incorrect product mounting
Inadequate sample preparation
Choosing unsuitable vibration parameters
Product resonance at specific frequencies
Loose fasteners or connectors
PCB or component damage
Structural cracks
Cable or solder-joint failures
Functional interruption during vibration
Failure to meet post-test performance criteria
Delays caused by laboratory availability

Accuracy in the test setup is one of the most important considerations; the method of mounting and the test profile should correspond as closely as necessary to the actual use or transportation conditions as specified by the applicable standard.

What Attracts You to UMSPCS for Carrying Out Shock and Vibration Testing Services?

At UMSPCS, we realise that testing involves more than just placing a product on a vibration table, since the appropriate standard, the test parameters, the documentation and the coordination of the laboratory all have a bearing on achieving a useful and acceptable test result.UMSPCS, with more than six years of experience and support in relation to over 600 product compliance requirements, enables businesses to deal with testing and regulatory requirements more efficiently.Our Support Includes:

Product requirement assessment
Applicable standard identification
Testing requirement evaluation
Laboratory coordination
Sample and document guidance
Test plan support
Test report review
Compliance documentation assistance
Coordination with recognised laboratories
Support for subsequent certification requirements, where applicable

The BIS also offers a facility search from the point of view of in-scope testing and includes information about accredited laboratories, which shows how important it is to choose a laboratory that has the appropriate testing scope.

Why Professional Testing Support Matters

A failure in a test can imply more than just an unsuccessful report; it might show that there is a design weakness which could later lead to:

Product returns
Customer complaints
Warranty claims
Safety concerns
Production delays
Certification difficulties
Loss of market confidence

Professional shock and vibration testing services enable manufacturers to detect these problems earlier and make timely improvements before carrying out large-scale production or launching the product into the market.

Conclusion

A product cannot show that it is reliable just because it works under normal conditions; true durability can only be demonstrated by its ability to continue to perform after having been subjected to the mechanical stresses to which it is likely to be exposed during transportation, handling and operation.

Whether it's testing for vibration durability and mechanical shock or for environmental conditions in accordance with IS 9000 and for specific product qualification, an appropriate testing programme can reveal potential weaknesses before they lead to costly failures.

If you need help with shock and vibration testing services, shock and vibration testing in India, or advice on how to select the appropriate laboratory and testing standard, UMSPCS can assist you at every stage of the process.

Contact UMSPCS now to talk about your product, the testing requirements that apply to it, and the compliance route you should take, and then move on to having a more durable, reliable,e and market-ready product. Also get to know more information about WEEE Directive Compliance.

Frequently Asked Questions (FAQs)

The shock and vibration testing services assess a product's capacity to endure the mechanical vibrations, shocks, and impacts that it experiences during transportation, handling, or operation.

It can be used to detect mechanical weaknesses, enhance durability, check performance, and show that the relevant product or industry requirements have been met.

Products such as electronics, automotive components, industrial equipment, telecom products, defence equipment, aerospace components, power products, and other items subjected to mechanical stress might need to be tested.

The standards that are relevant will depend on the product, and these may include IS 9000, IEC 60068, JSS, MIL, or standards that are specific to the product; the one that applies should be decided upon from the product requirement.

Yes, the relevant sections of IS 9000 do include environmental tests such as vibration and shock for electrical and electronic products, which are applicable. STQC has identified IS 9000 Parts 7 and 8 as being relevant to shock and vibration testing.

Vibration testing usually subjects a product to repeated controlled oscillations, whereas shock testing examines the way the product responds to sudden mechanical impacts or acceleration pulses.

A report shows that a particular sample has been tested under defined conditions; its acceptance and reuse are determined by the relevant certification scheme, the standard, any changes to the product, and the requirements of the customer or regulatory bodies.

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Shock and Vibration Testing