Customised testing solutions to increase your automotive quality
Nothing can undermine a customer’s confidence in your automotive brand more quickly than the presence of incessant noises and sounds, such as buzzes, squeaks and rattles (BSRs). While not typically related to automotive safety, BSRs are among the most frequently cited sources of dissatisfaction in automotive ratings and customer surveys, decreasing the current customers’ satisfaction of their purchasing or leasing decision, and giving prospective customers reasons to evaluate other automotive brands.
What is BSR testing?
Testing for BSRs typically involves road simulation testing that helps to isolate the root cause (or causes) of vibrations and road harshness that produce unwanted sounds audible within an automobile’s passenger compartment. Additional assessments evaluate the extent to which automobile velocity, acceleration and force can produce or enhance these sounds. Not only that, retesting is conducted to evaluate the effectiveness of proposed fixes in reducing or eliminating them.
Why is BSR testing important for your business?
Unresolved BSRs can result in costly rework and repairs during the manufacturing process, as well as excessive warranty expenses during the vehicles useful life. Additionally, BSRs can be a source of annoyance and frustration for consumers, negatively impacting perceptions of your brand’s quality and deterring customers from considering your products in the future. Therefore, identifying existing noise, vibration and harshness (NVH) causes will result in greater customer satisfaction and increased brand loyalty.
What are the advantages of servoelectric actuator (SEA) technology for BSR testing?
SEA technology is far ahead of hydraulic or electromagnetic actuation in terms of key performance metrics, including force, velocity, acceleration, root mean square (RMS) error, NVH and energy consumption. Employing a ‘greener’ approach than the traditional servohydraulic systems, SEA technology also delivers higher performance and accuracy, resulting in an increased frequency of repeatable tests. When conducting tests using the SEA Four Poster system, no hydraulic oil is used, minimising the risk of high pressure line and/or hose rupture and subsequent pollution. In general, SEA testing solutions require only a modest investment, minimising the manufacturer’s costs and waste during testing in the effort to develop high-quality products.
For further Information about the advantages of SEA technology compared to hydraulic/electromagnetic actuation and a comparison of these two technologies please download our infosheet:
As an independent third-party service provider, TÜV SÜD offers complete solutions, from on-site testing services to the development of customised testing equipment.
On-site BSR testing and auditing services
TÜV SÜD’s on-site testing services team has partnered with top tier OEMs for more than twenty years delivering testing services, root cause analysis and knowledge services, including:
BSR resolution at OEM factory, including support in
design guides and validation as well as maintenance
Four poster BSR testing, quality audits and drive file replication comparison
Body air leak/wind noise testing at OEM factory
Full service competitive vehicle benchmarking
Custom-designed BSR test rigs
TÜV SÜD designs and builds custom-designed BSR test rigs to simulate road conditions to isolate root causes for unwanted sounds audible to drivers and passengers. Specific types of test rigs include:
Fixed, Ambient or Environmental Four Poster (FAFP or FEFP)
Fully Transportable Ambient or Environmental Four Poster (TAFP or TEFP)
Modular Above Ground Ambient or Environmental Four Poster (MAGAFP or MAGEFP)
How can we help you?
TÜV SÜD offers automotive manufacturers proven BSR diagnostic and prevention tools and methods that reduce vehicle rework and repair at the assembly plant, minimise dealership repairs, lower warranty expenses and increase customer satisfaction. We partner with top tier automobile manufacturers on-site around the world to identify and resolve BSR root causes. TÜV SÜD also assists you in implementing product and process improvements to help reduce the risk of future design and quality issues. In addition to on-site services, TÜV SÜD also designs and builds customised Solutions for BSR, NVH, performance and durability testing as well as other automotive assessments to meet your specific application and requirements. Such solutions include single and multiple specimen damper performance and durability test systems, elastomer characterisation test stands, single and multi-axis vibration systems, modular above ground or transportable servoelectric actuator (SEA) four poster testing systems, with the latter introducing the possibility of silent and efficient servoelectric road simulation. TÜV SÜD also offers onsite staffing solution, placing qualified test technicians at your facility to utilise these custom solutions to conduct required testing.
Your benefits at a glance
Save time and money – with a green testing solution that consumes 80+% less energy, paying for itself over time
Increase profitability – through the development of a high quality product that is tested and verified
Customised solution – using state of the art Servo Electric Actuators technology that is faster, quieter and environmentally friendly
Benefit from a complete solution – with an end to end expert partner with global lab network