2010 CRC Showcase - Climate Change & Environment - Noise R1.105

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2010 CRC Showcase - Climate Change & Environment - Noise R1.105

  1. 1. “Noise” Dave Anderson, RailCorp Industry Chair, R1.105
  2. 2. ? • Why? • Why noise, for rail? • What? • What research was needed? • How? • How is it being addressed? • Who? • Who’s doing it? • Well? • What outcomes & benefits? • Aaaaarrgh… • Challenges • Mmmmmh.. • Where to from here?
  3. 3. Why should the rail industry bother with noise? • After all: – “the railway was here first” – “couldn’t they see that the house they bought was near the railway?”
  4. 4. Some harsh realities • Some aspects of rail noise have improved significantly, but others are INCREASING – More services, longer trains, faster trains – New designs (track & rolling stock) – New infrastructure projects  impact assessment • Community and regulator tolerance is REDUCING – Annoyance & complaint (particularly re “unnecessary noise”) – Political pressure – Emerging evidence of health effects
  5. 5. More harsh realities! • Direct costs to rail industry – Time and $ in complaint management – Delay and $ for projects • Indirect costs to industry – Reputation and image • Costs to community – Health effects
  6. 6. What research was needed? • Numerous noise issues and challenges – Maintenance & construction – Horns / whistles, level crossings – PA systems, stabling yards – Locomotives – Etc etc • Not all require “research” • Aim therefore to: – Focus on research needs – Align to industry priorities
  7. 7. How? Two specific issues identified 1. Curve noise 2. Rolling noise
  8. 8. Curve noise • High pitched, piercing noise, “squeal” • Numerous efforts > 20yrs • Australia at forefront of research & mitigation • Mechanism still unexplained
  9. 9. Curve noise – audience poll • “Normal” noise of a train at 80km/h = 85dBA (measured at 15m) • Curve noise (measured at 15m) often: – Exceeds 85dBA – Exceeds 95dBA – Exceeds 105dBA – Exceeds 115dBA – Exceeds 125dBA – Is louder than the space shuttle at take-off
  10. 10. Rolling noise
  11. 11. Rolling noise
  12. 12. Rolling noise control
  13. 13. Who? • University of Wollongong: – Richard Dwight – Jiandong Jiang – Wenxu Li • ISVR (UK): • Queensland University: – Chris Jones – Paul Meehan – David – Paul Bellette Thompson – Shijie Jiang – ??
  14. 14. Who? • ARTC – Kirsten Alexander – Craig Jones – Nick Petticrew • Queensland Rail – Mark Batstone • QR National – Don Skerman – Shelley Fergusson – Alex Howie
  15. 15. Who? • RailCorp – Dave Anderson – Malcolm Kerr – Sak Kaewenruen – Dave Parkinson – Ian Ying – Sav Shimada • PN: – Carolyne Southern, Alfonso Saez • TCA: – Peter Wheen
  16. 16. Emerging • Expertise in rail noise research & expertise • A vibrant industry network on rail noise
  17. 17. Outcomes • Curve noise – Detailed analysis and testing • Quantitative data • Statistical analysis • Robust but portable monitoring technique – Emerging new theory • “coupled modes” theory • Points the way towards better understanding & therefore better mitigation
  18. 18. Outcomes • Rolling noise – Robust but portable monitoring technique – Collaboration with ISVR (UK) – Rolling noise software – Alternatives to barriers! • Rail dampers now in use • Role of wheel & rail roughness better understood • Other opportunities (rail pad, wheel design, etc)
  19. 19. Challenges • Noise is a “misfit”! – “noise department” unusual in rail – Human element, “greenie” issue, engineering • Different notions – Existing rail: “squeal”! – Rail growth: “barriers”! • Recruiting PhD’s • Installing monitoring equipment
  20. 20. What next? • Curve noise – Validate new theory – Use monitoring system in different networks – Test mitigation options – “How to” manual for industry • Rolling noise – Calibrate software – Test mitigation options – “How to” manual & software for industry

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